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Flashcards

Sc14L04 The hand

Emma Allde Medicine Y2 English 167 cards

Power grip involves _______ of the digits and thumbs to grasp objects b/w the palm and digits.

Cards in this deck (167)

  1. 1Power grip involves _______ of the digits and thumbs to grasp objects b/w the palm and digits.flexionPower grip involves _______ of the digits and thumbs to grasp objects b/w the palm and digits.
  2. 2Which type of grip emphasises the involvements of the digital pulp? Are the digits flexed or extended? The thumb is opposed and palmarly adducted or abducted?precision grip
    flexed
    adducted    Which type of grip emphasises the involvements of the digital pulp? Are the digits flexed or extended? The thumb is opposed and palmarly ...
  3. 3What digits position is an important requirement of hand function?thumb opposition
  4. 4Which thumb joint is different than the same joint at the other digits? What is the function of this difference?The carpometacarpal (CMC) joint of the thumb allows much wider movementWhich thumb joint is different than the same joint at the other digits? What is the function of this difference?
  5. 5What type of joint are the CMC joints?saddleWhat type of joint are the CMC joints?
  6. 6Other than the thumb's CMC joint, which other digits allow some movement?4th and 5th
  7. 7What hand motion relies on the CMC joints' action?cupping our hands
  8. 8What kind of joints are the interphalangeal joints?bicondylar
    NB: very stable and only allow movement in one plane    What kind of joints are the interphalangeal joints?
  9. 9The precision grip involves rotation at the _______________ joint of the thumb, and the _______________ joint of the thumb and fingers.carpometacarpal
    metacarpophalangeal
  10. 10Precision grip involves the intrinsic muscles of the hand working together with which other muscles?flexor digitorum superficialias
    flexor digitorum profundus
    flexor pollicis longus    Precision grip involves the intrinsic muscles of the hand working together with which other muscles?
  11. 11What is a key action for precision grip?opposition
  12. 12What is the strongest power grip?palmarWhat is the strongest power grip?
  13. 13What type of grip involves the thumb acting as a buttress to an object placed in the palmar gutter?palmar grip
  14. 14What type of grip involves an object being held b/w palm and flexed fingers.hook grip
  15. 15Which grip does not involve any thumb action?hook grip
  16. 16Which grip is only secure in one direction?hook grip
  17. 17What is digit 1?the thumb
  18. 18What is digit 5?the little finger
  19. 19What is another name for the thumb?pollex
  20. 20What is another name for finger 2?index finger, digiti indicus
  21. 21What is another name for digit 3?middle finger, digiti medius
  22. 22What is another name for digit 4?ring finger, digiti anularis
  23. 23What is another name for digit 5?little finger, digiti minimae
  24. 24The hand has (5) metacarpal bones. From proximal to distal what the features of the metacarpal bones?base, shaft and headThe hand has (5) metacarpal bones. From proximal to distal what the features of the metacarpal bones?
  25. 25What carpal bone does the thumb's metacarpal articulate with proximally?trapeziumWhat carpal bone does the thumb's metacarpal articulate with proximally?
  26. 26Which carpal bones do the digit 2-5 metacarpals articulate with proximally?trapezoid, capitate, hamate and trapeziumWhich carpal bones do the digit 2-5 metacarpals articulate with proximally?
  27. 27What structures form the knuckles?the heads of the metacarpals
  28. 28What do the metacarpals articulate with distally?the proximal phalanges
  29. 29The shaft of the metacarpal bone is: concave/convex? _________ shape in transverse cross section has (3) surfaces called?concave
    triangular
    medial, lateral and posterior    The shaft of the metacarpal bone is: concave/convex? _________ shape in transverse cross section has (3) surfaces called?
  30. 30How many phalanges does the hand have?14
    3 for each finger (12)
    2 for each thumb (2)    How many phalanges does the hand have?
  31. 31What phalanges do the fingers have?proximal, intermediate and distalWhat phalanges do the fingers have?
  32. 32What phalanges does the thumb have?proximal and intermediate
  33. 33What aspect of skin can be used to distinguish the distal interphalangeal (DIP) and proximal interphalangeal (PIP) joints?creases
  34. 34The palmar digital crease (PDC) is located over what?the middle of the proximal phalanxThe palmar digital crease (PDC) is located over what?
  35. 35The proximal and distal palmar crease lie proximal to what?metacarpophalangeal (MCP) jointThe proximal and distal palmar crease lie proximal to what?
  36. 36Each digit has a _____________ bone proximally?metacarpal
  37. 37The bases of the metacarpal bones make joints with the nearest carpal bone of the distal row. What are the joints called?carpometacarpal (CMC) joint
  38. 38The 2nd and 3rd CMC joint are said to be fixed as they make little movement. The 4th and 5th joints as well as the 2-3 are ________, _________ joints.ellipsoidal (or irregular plane), synovialThe 2nd and 3rd CMC joint are said to be fixed as they make little movement. The 4th and 5th joints as well as the 2-3 are ________, ____...
  39. 39What is the 1st CMC joint?synovial, saddle joint (highly mobile)What is the 1st CMC joint?
  40. 40In what planes do movements occur at the 1st CMC joint?it is biaxial, it permits flexion/extension and abduction/ adduction
    these joints also allow the thumb to make the movement of opposition (a combination of flexion and abduction and some additional rotations at this and the intercarpal joints)    In what planes do movements occur at the 1st CMC joint?
  41. 41What is reposition?the resetting of opposition to the anatomical positionWhat is reposition?
  42. 42What is the joint b/w the metacarpal bones with the proximal phalanx?metacarpophalangeal joints
  43. 43What type of joints are the metacarpophalangeal joints?synovial condyloid (ellipsodial)
    but the first ones behave more like a hinge joint    What type of joints are the metacarpophalangeal joints?
  44. 44What prevents the metacarpal bones from moving too far apart from each other?deep transverse metacarpal ligamentsWhat prevents the metacarpal bones from moving too far apart from each other?
  45. 45What ligaments prevent excessive abduction and adduction (or flexion/ extension of the thumb)?radial (lateral) and ulnar (medial) collateral ligamentsWhat ligaments prevent excessive abduction and adduction (or flexion/ extension of the thumb)?
  46. 46What structure limits hyperextension of the hand?a plate of fibrous tissue on the palmar side of the joint (volar plate), with a complex of ligamentsWhat structure limits hyperextension of the hand?
  47. 47What type of joints are the proximal interphalangeal joints (PIP) and the distal interphalangeal (DIP) joints?synovial hinge joints
  48. 48What interphalangeal jont does the thumb have?interphalangeal
  49. 49At what joints can the hand move?mid-carpal, carpometacarpal, metacarpophalangeal and interphalangeal (PIP and DIP)
  50. 50Which (2) joints are pretty much rigid/ fixed due to ligaments?carpometacarpal joints due the palmar and dorsal carpometacarpal ligaments
    intermetacarpal joints due to dorsal, palmar and interosseous ligaments
  51. 51What kind of joints are the metacarpophalangeal joints?condyloid w/ a lax capsule
  52. 52What structures strengthen the metacarpophalangeal joints' capsule?palmar ligaments and fibrous cartilage
  53. 53What planes of movement are the MCP joints capable of?flexion/ extension, abduction/ adduction
  54. 54What is the plane of adduction/ abduction of the MCP joints based around?the 3rd digit (middle finger)
  55. 55Certain ligaments tighten when movement at the MCP joints become too excessive. What are these ligaments called??collateral
  56. 56What movement makes it impossible for abduction at the MCP joints?flexion
  57. 57The MCP joints can be passively rotated up to __ degrees50
  58. 58The interphalangeal joints are what kind of joint? What is their plane of movement?hinge
    flexion/ extension
  59. 59What joints prevent excessive movement at the IP joints?collateral and palmar ligaments
  60. 60What angle does the thumb jut out at?45 degrees
  61. 61What joint allows the thumb to lie flat ?the carpometacarpal joint
  62. 62What joint is the thumb's CMC joint? What are the axes of movement?saddle joint
    opposition, reposition and circumduction
  63. 63Flexion and extension of the thumb take place _____ to the plane of the armparallel
  64. 64_________________ is the motion wherein the tip of the thumb comes into contact with the tip of any other digit on the same handOpposition
  65. 65If the thumb contacts any other portion of the digits other than the tip it is called?Apposition
  66. 66_________ is the movement that describes a cone with the apex at the first CMJ and the circular opening at the tip of the thumbCircumduction_________ is the movement that describes a cone with the apex at the first CMJ and the circular opening at the tip of the thumb
  67. 67The ligaments surrounding the first CMJ are very important to maintaining thumb function. There are (5) and they allow considerable movement, protecting them from injury more so the MP joint. However, what is the CMJ commonly affected by?osteoarthritisThe ligaments surrounding the first CMJ are very important to maintaining thumb function. There are (5) and they allow considerable movem...
  68. 68What ligament of the thumb's MP is frequently stretch or torn? It is referred to as "gamekeeper's thumb" or "rabbits revenge" "skier's thumb" "ULC tear"ulnar ligamentWhat ligament of the thumb's MP is frequently stretch or torn? It is referred to as "gamekeeper's thumb" or "rabbits revenge" "skier's th...
  69. 69What (2) fascia is the palm fascia continuous with?antebrachial (forearm) and dorsum fasciaWhat (2) fascia is the palm fascia continuous with?
  70. 70The palmar fascia is thin over the thenar and hypothenar eminences but thick centrally where it forms what?fibrous palmar aponeurosis (part of the deep fascia of the hand)The palmar fascia is thin over the thenar and hypothenar eminences but thick centrally where it forms what?
  71. 71What structures are covered by the fibrous palmar aponeurosis?soft tissue and long flexor tendonsWhat structures are covered by the fibrous palmar aponeurosis?
  72. 72The proximal end of the palmar aponeurosis os continuous with what (2) structures?flexor retinaculum and palmaris longus tendonThe proximal end of the palmar aponeurosis os continuous with what (2) structures?
  73. 73Distally, what does the palmar aponeurosis form?four longitudinal digital bands that radiate from the apexDistally, what does the palmar aponeurosis form?
  74. 74What do the longitudinal bands attach to? Then do what they become?the bases of the proximal phalanges and become continuous with the fibrous digital sheathsWhat do the longitudinal bands attach to? Then do what they become?
  75. 75What keeps the longitudinal bands together?the transverse fibres of the palmar aponeurosis
  76. 76What joins the digits across the web-space, distal to the palmar aponeurosis?the superficial transverse metacarpal ligamentsWhat joins the digits across the web-space, distal to the palmar aponeurosis?
  77. 77What are the ligamentous tubes the enclose synovial sheaths, the superficial deep flexor tendons and the tendon of flexor pollicis longus in their passage to their respective digit?fibrous digital sheathsWhat are the ligamentous tubes the enclose synovial sheaths, the superficial deep flexor tendons and the tendon of flexor pollicis longus...
  78. 78b/w the flexor tendons and fascia covering the deep palmar muscles are two potentials spaces. What are they called?thenar and midpalmar spaceb/w the flexor tendons and fascia covering the deep palmar muscles are two potentials spaces. What are they called?
  79. 79What separates the thenar and midpalmar spaces?a fascial layer that connects the palmar aponeurosis to the 3rd metacarpal bone
  80. 80What can happen to these spaces if they become infected or if there is a lesion to the web space?they can swell causing pain on the affected side of the 3rd metacarpalWhat can happen to these spaces if they become infected or if there is a lesion to the web space?
  81. 81Inside the digital fibrous sheaths lie the long tendons of the fingers. These tendons are surrounded by synovial sheaths. The synovial sheaths contain fluid. The tendons appear to be invaginate into a synovial sheath from one side, and suspended in it a by a fold of synovial membrane. What is this membrane called?mesotendonInside the digital fibrous sheaths lie the long tendons of the fingers. These tendons are surrounded by synovial sheaths. The synovial sh...
  82. 82Other than suspending the tendons. What else does the mesotendon do?transports blood vessels and nerves to the tendon
  83. 83What is the other term for mesotendon?vinculae
  84. 84Where do the digital fibrous sheaths end?just proximal to the MCP joint and just distal to the PIP joint
  85. 85Where do the digital fibrous sheaths extend to proximally?1 and 5 to the flexor retinaculum, 2-4 proximal to the fibrous sheath
  86. 86What is the sheath surrounding digiti minimi tendon referred to as?ulnar bursaWhat is the sheath surrounding digiti minimi tendon referred to as?
  87. 87What is the sheath surrounding pollicis longus tendon referred to as?radial bursa
  88. 88What does the ulnar bursa expand to surround?the tendons of the flexors of the fingers by a single common flexor sheath, into which they are invaginated from by the lateral side
  89. 89The synovial sheaths surrounding the tendons of the flexors of the fingers are prone to infection. What is this called?tenosynovitisThe synovial sheaths surrounding the tendons of the flexors of the fingers are prone to infection. What is this called?
  90. 90What could happen the synovial sheaths of the pollex or digiti mini are inflamed (or infected) and track upwards?it may reach the carpal tunnel and cause carpal tunnel syndrome
  91. 91How many pennate, interossei muscles are there?7
  92. 92How can the interossei muscles be divided?three palmar single-headed and four dorsal double-headed
  93. 93What supplies the interossei muscle?deep branch of the ulnar nerve
  94. 94What do the palmar interossei arise from?2nd, 4th and 5th metacarpal bonesWhat do the palmar interossei arise from?
  95. 95What do the palmar interossei insert to?the corresponding tendons of the dorsal aponeurosis
  96. 96Which joints do the palmar interossei flex at?MCP joints
  97. 97Which joints do the palmar interossei extend at?IP joints
  98. 98What is the prime movement of the palmar interossei muscles?adduction of digits 3-5 toward the middle finger
  99. 99Where do the dorsal interossei arises from?two heads arise from the adjacent sids of the five metacarpal bonesWhere do the dorsal interossei arises from?
  100. 100Where does the 1st interosseous extend to?proximal phalanx of the 2nd finger on the radial side
  101. 101Where does the 2nd interosseous extend to?the proximal phalanx of the middle finger on the radial side
  102. 102Where does the 3rd interosseous extend to?the proximal phalanx of the middle finger on the ulnar side
  103. 103Where does the 4th interosseous extend to?the proximal phalanx of the 4th finger on the ulnar side
  104. 104Which joints do the dorsal interossei flex at?MCP joints
  105. 105Which joints do the dorsal interossei extend at?IP joints
  106. 106What is the main function of the dorsal interossei?abduction of digits toward the middle finger
  107. 107What muscle arises from the radial side of flexor digitorum longus tendon and inserts into the dorsal expansion?lumbrical musclesWhat muscle arises from the radial side of flexor digitorum longus tendon and inserts into the dorsal expansion?
  108. 108What joints do the lumbricals extend and flex?flex: MCP joints
    extend: IP joints
  109. 109What innervates the lumbricals?1st and 2nd: median n. (C8 - T1)
    3rd and 4th: ulnar nerve (deep terminal branch C8-T1)
    NB: there is variation, sometimes the 1st and 2nd are also innervated by the ulnar
  110. 110What muscle movements are lumbricals responsible for?extension of the finger PIP and DIP joints
    flexion of the finger MCP joints
  111. 111What structures are formed on the distal ends of the metacarpals and on the digits as the extensor tendons become flattened?extensor (dorsal expansions)
    that wrap around the dorsum and sides of the metacarpal head and proximal phalanx    What structures are formed on the distal ends of the metacarpals and on the digits as the extensor tendons become flattened?
  112. 112How do the dorsal expansions found on our dorsal digits attach themselves?they anchor like visor-like hoods onto each side of a phalanx via the palmar ligamentHow do the dorsal expansions found on our dorsal digits attach themselves?
  113. 113What do the dorsal expansions divide into?2 lateral bands which pass to the base of the distal phalanx
  114. 114What structures may joint the lateral bands of dorsal expansion on the way to the distal phalanx?an interosseous and lumbrical tendonWhat structures may joint the lateral bands of dorsal expansion on the way to the distal phalanx?
  115. 115On which digit, may the interossei and lumbrical gain insertion on the middle phalanx?middle
  116. 116In what condition has the distal phalanx been forcibly flexed when the extensor is taut, resulting in avulsion (tearing away) of the insertion of one of the extensor tendons into the distal phalanges?Mallet fingerIn what condition has the distal phalanx been forcibly flexed when the extensor is taut, resulting in avulsion (tearing away) of the inse...
  117. 117In what condition does a direct end-on trauma to the finger, at the back of the proximal IP joint OR from laceration to the dorsum of the finger result in avulsion (tearing away) of the central slip of the extensor tendon into the base of the middle phalanx?Boutonniere deformityIn what condition does a direct end-on trauma to the finger, at the back of the proximal IP joint OR from laceration to the dorsum of the...
  118. 118What four small muscles are found near the thumb on its thenar side?abductor pollicis brevis, flexor pollics brevis, opponens pollicis and adductor pollicis
    the first (3) make up the thenar eminence    What four small muscles are found near the thumb on its thenar side?What four small muscles are found near the thumb on its thenar side?
  119. 119Where do the thenar muscles originate from?flexor retinaculum and carpal bones
  120. 120Where do the thenar muscles insert?onto the base of the thumb or onto the sides of the first metacarpal bone
  121. 121What nerves supply the thenar muscles?median nerve
    except adductor pollicis which is supplied by the deep branch of the ulnar nerve
  122. 122What are the three hypothenar muscles, found around the little finger?abductor digiti minimi, flexor digiti minimi, oppens digiti minimi
    they form the hypothenar eminence    What are the three hypothenar muscles, found around the little finger?
  123. 123Where do the hypothenar muscles arise from?flexor retinaculum and carpal bones
  124. 124Where do the hypothenar muscles insert?the ulnar base of the 5th metacarpal
  125. 125How are the hypothenar muscles innervated?ulnar nerve
  126. 126Where does abductor pollicis brevis insert? What is its action?abduction of the thumb
    proximal phalanx of the thumb    Where does abductor pollicis brevis insert? What is its action?
  127. 127Where does flexor pollicis brevis arise from? Where does it insert?arises superificially from flexor retinaculum
    arises deeply from the tubercle of the trapezium
    inserts into the radial sesamoid bone of the MCP joint of the thumb    Where does flexor pollicis brevis arise from? Where does it insert?
  128. 128What is the action of the flexor pollicis brevis?flexion, adduction and abduction of the thumb
    (aka opposition)
  129. 129Where does opponens pollicis insert? What is its action?radial margin of 1st metacarpal
    opposition of the thumb, adduction    Where does opponens pollicis insert? What is its action?
  130. 130Where does adductor pollicis arise? Where does it insert?arises transversely from the entire length of the 3rd metacarpal
    obliquely from adjacent carpal bones
    inserts into the ulnar sesamoid bone of the MCP joint of the thumb    Where does adductor pollicis arise? Where does it insert?
  131. 131What is the action of the adductor pollicis?adduction, some flexion and opposition
  132. 132What is the function of abductor digit minimi?abductionWhat is the function of abductor digit minimi?
  133. 133What is the function of flexor digiti minimi brevis?flexion at the MCP jointWhat is the function of flexor digiti minimi brevis?
  134. 134What is the function of opponens digiti minimi?it brings the 5th digit in position for oppositionWhat is the function of opponens digiti minimi?
  135. 135What muscle, though not strictly hypothenar, arises from the palmar aponeurosis, inserting over the hypothenar eminence, provides protection to the ulnar nerve and artery in the region?palmaris brevisWhat muscle, though not strictly hypothenar, arises from the palmar aponeurosis, inserting over the hypothenar eminence, provides protect...
  136. 136Which artery enters the hand through the anatomical snuffbox, to the dorsum of the hand and forms the deep palmar arch?radial arteryWhich artery enters the hand through the anatomical snuffbox, to the dorsum of the hand and forms the deep palmar arch?
  137. 137Which artery enters the palm laterally to the pisiform bone, turning laterally to form the superficial palmar arch located b/w the palmar aponeurosis and finger flexion tendons?ulnar arteryWhich artery enters the palm laterally to the pisiform bone, turning laterally to form the superficial palmar arch located b/w the palmar...
  138. 138Which crease lies level with the superficial palmar arch?proximal transverse palmar creaseWhich crease lies level with the superficial palmar arch?
  139. 139Which end of the superficial palmar arch joins the superficial palmar branch of the radial artery, forming continuous arterial anastomosis?lateral endWhich end of the superficial palmar arch joins the superficial palmar branch of the radial artery, forming continuous arterial anastomosis?
  140. 140The superficial palmar arch gives rise to an artery to the medial side of digiti minimi and (3) what?common digital arteriesThe superficial palmar arch gives rise to an artery to the medial side of digiti minimi and (3) what?
  141. 141The common digital arteries are joined by what arteries from the deep palmar arch?palmar metacarpal arteries
  142. 142What do the palmar metacarpal arteries give rise to? They run along side digits 2-5the proper digital arteriesWhat do the palmar metacarpal arteries give rise to? They run along side digits 2-5
  143. 143There are ________ _________ that pass b/w the metacarpals, either proximal or distal to the deep transverse metacarpal ligament, the go on to joint the dorsal metacarpal artery of the same interdigital cleft.perforating branches
  144. 144Dorsal metacarpal arteries arise from where?dorsal carpal archDorsal metacarpal arteries arise from where?
  145. 145As the radial artery leaves the dorsum, it passes b/w the heads of what muscle?1st dorsal interosseous muscleAs the radial artery leaves the dorsum, it passes b/w the heads of what muscle?
  146. 146How does the radial artery typically divide?deep palmar arch and princeps pollicis arteryHow does the radial artery typically divide?
  147. 147Where does the palmar radialis indicis artery normally arise from?princeps pollicis arteryWhere does the palmar radialis indicis artery normally arise from?
  148. 148The superficial and deep palmar venous arches run along which structures?The superficial and deep palmar arterial arches, respectively
  149. 149The dorsal digital veins unite to form what?a dorsal venous network
  150. 150Where are the superficial veins of the hand of located?on the dorsum of the hand, covered by the delicate skin of the dorsal handWhere are the superficial veins of the hand of located?
  151. 151What do the superficial hands of the vein form and what is this called?a venous plexus called the dorsal venous network
    these can usually be seen through the skin of dorsum of the hand    What do the superficial hands of the vein form and what is this called?
  152. 152Where does the dorsal venous network drain?proximally to the lateral cephalic vein or medial basicilic vein,
    thereby back to systemic circulation    Where does the dorsal venous network drain?
  153. 153What nerve provides motor and sensitive innervation to most of the lateral side of the hand?median n.What nerve provides motor and sensitive innervation to most of the lateral side of the hand?
  154. 154The median n. enters the hand via the _________ ________ b/w the flexor tendons of the digitscarpal tunnel
  155. 155The median n. supplies the (3) thenar muscles (abductor pollicis brevis, flexor pollicis brevis, opponens pollicis) via the _________ branchrecurrentThe median n. supplies the (3) thenar muscles (abductor pollicis brevis, flexor pollicis brevis, opponens pollicis) via the _________ branch
  156. 156The median n. supplies the (2) lumbricals via its _______ branchdeep palmarThe median n. supplies the (2) lumbricals via its _______ branch
  157. 157Sensory fibres supply the palmar surfaces and sides of the thumb, index finger and middle radial half of the ring finger (including the nail beds) via the median n.'s ______ branchsuperficial palmarSensory fibres supply the palmar surfaces and sides of the thumb, index finger and middle radial half of the ring finger (including the n...
  158. 158There is a ___________ branch of the mn which is given off at the forearm, and travels proximal to the carpal tunnel. It supplies the ________ part of the palm. As it branches earlier, it is not affected by carpal tunnel syndrome.proximal cutaneous
    lateral    There is a ___________ branch of the mn which is given off at the forearm, and travels proximal to the carpal tunnel. It supplies the ___...
  159. 159The ulnar nerve reaches the palmar aspect of the wrist _________ to the ulnar artery. Passing ____ the retinaculum, and reaches the hypothenar eminence.medial, over
  160. 160Over the hypothenar eminence, the ulnar nerve divides into (2) branches. What are they?deep and superficialOver the hypothenar eminence, the ulnar nerve divides into (2) branches. What are they?
  161. 161The _______ branch of the ulnar n. provides the cutaneous innervations to the palmar aspect of the little finger and ulnar half of the ring finger. It also supplies the nail-beds of those fingers.superficial
  162. 162The ______ branch of the ulnar n. innervates the hypothenar muscles as well as what other muscles?the ulnar (2) lumbrical muscles, adductor pollicis and the dorsal and palmar interosseous muscles
  163. 163What branch does the ulnar nerve give off to the proximal wrist, supplying sensation to the medial side of the hand, 5th digit, medial half of the 4th digit?dorsal cutaneousWhat branch does the ulnar nerve give off to the proximal wrist, supplying sensation to the medial side of the hand, 5th digit, medial ha...
  164. 164What branch of the ulnar n. supplies a small area of skin over the lower forearm and hypothenar eminence?a small palmar cutaneous branch arising proximal to the wrist
  165. 165Affected patients often experience numbness and tingling along the little finger and the ulnar half of the ring finger. This discomfort is often accompanied by weakness of grip and, rarely, intrinsic wasting. One of the most severe consequences is loss of intrinsic muscle function in the hand. What nerve is trapped?ulnar nerve
    (either at medial epicondyle of the humerus or at the level of the pisiform bone)
  166. 166Which nerve provides sensory feedback form the dorsum of the hand, thumb and index middle end of the radial side of the ring finger?radial n.
  167. 167Which branch of the radial n. is a direct continuation of it, and is purely sensory?superficial

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Medicine Y2 (Scenario 14 | Wrist and hand) Flashcards on Sc14L04 The hand, created by Emma Allde on 01/10/2016.
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