Flashcards
Anatomy - muscles
Cards in this deck (108)
- 1Iliacus What is the proximal and distal attachments? Nerve supply? action?proximal = Iliac fossa, iliac crest, ala of sacrum, ant. sacroiliac ligament
distal attachment = with psoas as iliopsoas and inserts into lesser trochanter of femur
femoral nerve (L2,3)
hip flexion - 2Psoas What is the proximal and distal attachments? Nerve supply? action?Proximal = T12-L4 bodies, IV disks, lumber transverse processes
Distal = lesser trochanter of femur (via iliopsoas)
Anterior rami L 1 - 3
Hip flexion, bend trunk laterally (one), raise trunk from a supine position - 3Obturator Internus What is the proximal and distal attachments? Nerve supply? action?Proximal = obturator membrane and surrounding bones
Distal = greater trochanter (medial side)
nerve to obturator internus (L5-S1)
lateral rotation of hip - 4Piriformis What is the proximal and distal attachments? Nerve supply? action?Proximal = pelvic surface of sacrum and Sacrotuberous lig.
Distal = greater trochanter (sup. border)
nerve to piriformis ([L5], S1,2)
laterally rotates hip - 5Coccygeus What is the proximal and distal attachments? Nerve supply? action?Proximal = ischial spine and sacrospinous lig.
Distal = coccyx and inferior end of sacrum
coccygeus branch (direct branch of sacrial plexus) (S4, S5)
support pelvic viscera and flexion of coccyx - 6levator ani consists of which two muscles? Innervation?pubococcygeus ( puborectalis & levator prostatae or pubovaginalis) and iliococcygeus
nerve to levator ani (S4) and pudendal n. (S2-4) - 7Pectineus What is the proximal and distal attachments? Nerve supply? action?Proximal = superior ramus of pubis
Distal = pectineal line of femur
Femoral n. (L2,3) and occasional branch from obturator.
adducts and flexs hip, assists in medial rotation of hip - 8Sartorius What is the proximal and distal attachments? Nerve supply? action?Proximal = Ant. superior iliac spine
Distal = superior part of medial surface of tibia
Femoral n. (L2,3)
flex, abducts and laterally rotates hip jt. and flex knee also - 9Quadriceps What is the proximal and distal attachments? Nerve supply? action?Proximal:
-rectus femoris = Ant. inferior iliac spine and ilium above acetsbulum
-vastus lateralis = greater trochanter and lateral linea aspera
-Vastus medialis = intertrochanteric line and medial linea aspera
-vastus intermedialis = ant. and lat. shaft of femur
Distal = quadriceps tendon then tibial tuberosity
Femoral n. (L2,3,4)
Extends knee (rectus femoris also flex hip) - 10Gracilis What is the proximal and distal attachments? Nerve supply? action?Proximal = body and inf. ramus of pubis
Distal = Superior medial surface of tibia
Obturator n. (L2,3)
Adducts hip and flexes knee - 11Adductor longus What is the proximal and distal attachments? Nerve supply? action?Proximal = Body of pubis
Distal = middle 1/3 of linea aspera
Obturator n. (L2,3,4)
Adducts thigh - 12Adductor Brevis What is the proximal and distal attachments? Nerve supply? action?Proximal = body and inferior ramus of pubis
Distal = pectineal line and prox. linea aspera
Obturator n. (L2,3,4)
Adducts thigh (may assist flexion) - 13Adductor magnus What is the proximal and distal attachments? Nerve supply? action?Proximal = Ishiopubic ramus and ischial tuberosity
Distal = linea aspera, med. supercondyler line and adductor tubercle
femoral n. (L2,3,4)
[Hamstring part - tibial division of sciatic n. (L4) ]
Adducts thigh
(adductor part flexes,hamstring part extends thigh) - 14Obturator externus What is the proximal and distal attachments? Nerve supply? action?Proximal = obturator membrane and surrounding bones
Distal = trochanteric fossa
obturator n. (L3,4)
Laterally rotates thigh - 15Gluteus maximus What is the proximal and distal attachments? Nerve supply? action?Proximal = sacrum, sacrotuberous lig, behind posterior gluteal line
Distal = 3/4 iliotibial tract and 1/4 gluteal tuberosity of femur
Inf. gluteal n. (L5, S1,2)
extends hip and assists in lateral rotation - 16Tensor fascia latae What is the proximal and distal attachments? Nerve supply? action?Proximal = Ant. iliac crest and ant. superior iliac spine
Distal = iliotibial tract
Sup. gluteal n. (L4,5,S1)
tenses fascia latae and iliotibial tract and supports femur on tibial when standing - 17Gluteus medius What is the proximal and distal attachments? Nerve supply? action?Proximal = ilium between post. and ant. gluteal line
Distal = Greater trochanter of femur (lateral surface)
Sup. gluteal n. (L4,5,S1)
Abducts and medial rotates - 18Gluteus minimus What is the proximal and distal attachments? Nerve supply? action?Proximal = ilium between ant. and inf. gluteal line
Distal = greater trochanter (ant.surface)
Sup. gluteal n. (L4,5,S1)
abducts and medial rotates hip - 19Gemelli What is the proximal and distal attachments? Nerve supply? action?Proximal:
-Superior = ischial spine
-Inferior = ischial tuberosity
Distal = bledns with tendon of obturator internus
Innervation
-superior = nerve to obturator internus
-Inferior = nerve to quadratus femoris
Laterally rotates - 20Quadratus femoris What is the proximal and distal attachments? Nerve supply? action?Proximal = Ischial tuberosity
Distal = Quadrate tubercle on intertrochanteric crest
nerve to quadratus femoris (L5, S1)
Laterally rotates hip - 21Semitendinosus What is the proximal and distal attachments? Nerve supply? action?Proximal = ischial tuberosity
Distal - medial surface of superior tibia
Tibial division of sciatic (L5,S1,S2)
extend hip and flex knee - 22Semimembranosus What is the proximal and distal attachments? Nerve supply? action?Proximal = ischial tuberosity
Distal = post. surface of medial condyle of tibia
tibial division of sciatic (L5,S1,2)
extend hip and flex knee - 23Biceps femoris What is the proximal and distal attachments? Nerve supply? action?Proximal:
-long head = ischial tuberosity
-short head = linea aspera and lat. supracondylar line of femur
distal = head of fibula
innervation:
- long head = tibial division of sciatic (L5,S1,2)
- Short head = common peroneal division of sciatic (L5, S1,2)
extend hip and flex knee - 24Peroneus longis What is the proximal and distal attachments? Nerve supply? action?Proximal = head and upper 2/3 of lateral fibula
Distal = 1st metatarsal and medial cuneiform
Superficial peroneus N (L5,S1,2)
Everts foot - 25Peroneus Brevis What is the proximal and distal attachments? Nerve supply? action?Proximal = inf. 2/3 of lateral fibula
Distal = Tuberosity on lateral side of bone on 5th metatarsal
Superficial peroneal N. (L5,S1,2)
Everts foot - 26Tibialis anterior What is the proximal and distal attachments? Nerve supply? action?Proximal = Lateral condyle of tibia, superior 1/2 of laterla tibial surface, interosseus membrane
Distal = Med. and inf. surfaces of medial cuneiforms and base of tst metatarsal
Deep peroneal n. (L4,5)
Dorsiflexes ankle and inverts foot - 27Extensor digitorum Longus What is the proximal and distal attachments? Nerve supply? action?Proximal = lateral condyle of tibia, interosseus membrane, super 3/4 of medial surface of tibia
Distal = middle and distal phalanges of lateral 4 digits
deep peroneal n. (L4,5)
extends lat. 4 digits and dorsiflexes ankle - 28Peroneau tertius What is the proximal and distal attachments? Nerve supply? action?Proximal = inf. 1/3 ant. fibula, interosseus membrane
Distal = dorsum of base of 5th metatarsal
deep peroneal n. (L4,5)
dorsiflexes ankle and assists of eversion of foot - 29Extensor hallucis longis What is the proximal and distal attachments? Nerve supply? action?Proximal = middle ant. surface of fibula and interosseus membrane
Distal = dorsal aspect of distal phalanx of hallux
deep peroneal n. (L4,5)
extends hallux and dorsiflexes ankle - 30Extensor hallucis brevis What is the proximal and distal attachments? Nerve supply? action?Proximal = superior surface of calcaneus and inf. extensor retinaculum
Distal = base of prox. phalanx of hallux
Deep peroneal n. (L5,S1)
no action on lecture slides - 31Extensor digitorum brevis What is the proximal and distal attachments? Nerve supply? action?Proximal = superior surface of calcaneus and inf. extensor retinaculum
Distal = long extensor tendons of toes 2-4
Deep peroneal nerve (L5,S1)
no action on slides but would assist with extension - 32Gastrocnemius What is the proximal and distal attachments? Nerve supply? action?Proximal:
Medial head = popliteal surface of femur sup. to medial condyle
Lateral head = lateral aspect of lateral condyle of femur
Distal: post. surface of calcaneus via tendocalcaneus
tibial n. (S1,2)
Planterflexes ankle jt and flex knee - 33Plantaris What is the proximal and distal attachments? Nerve supply? action?Proximal = lateral supracondyler line of femur
Distal = post. surface of calcaneus via tendocalcaneus
Tibial n (S1,2)
assist on plantarfelxion of ankle jt - 34Soleus What is the proximal and distal attachments? Nerve supply? action?Proximal = soleal line of tibia, upper 1/3 post fibula, tendinous arch between bony elements
Distal = post. surface of calcaneus via tendocalcaneus
Tibial N. (S1,2)
Planterflexes ankle jt. - 35Popliteus What is the proximal and distal attachments? Nerve supply? action?Proximal = lateral condyle of femur and lateral meniscus
Distal = popliteal area of tibia (above soleal line)
Tibial n. (L,4,5,S1)
Unlocks knee jt. by laterally rotating femur on fixed tibia - 36Flexor digitorum longus What is the proximal and distal attachments? Nerve supply? action?Proximal = post. surface of tibia
Distal = base of distal phalanges of digits 2-4
tibial n (L5,S1,2)
flexes lateral 4 digits and weak plantarflexion of ankle jt - 37Flexor hallucis longus What is the proximal and distal attachments? Nerve supply? action?Proximal = post. surface of fibula
Distal = base of distal phalanx of hallux
tibial n. (L5,S1,2)
flexes hallux and weak plantarflexion of ankle jt. - 38Tibialis posterior What is the proximal and distal attachments? Nerve supply? action?Proximal = post surface of tibia and fibula and interosseus membrane
Distal = tendons divide and attach to every foot bone except talus
Tibial n. (L4,5)
plantarflexes ankle and inverts foot - 39Abductor hallucis What is the proximal and distal attachments?Proximal = medial tuberles of calcaneus and flexor retinaculum
Distal = medial base of prox. phalanx
Foot layer 1 - 40Flexor digitorum brevis What is the proximal and distal attachments?Proximal = medial tubercle of calcaneus
Distal = middle phalanges of lateral 4 toes
Foot layer 1 - 41Abductor digiti minimi What is the proximal and distal attachments?Proximal = med and lat. tubercle of calcaneus
Distal = lat. base of prox. phalanx (little toe)
Foot layer 1 - 42Lumbricals What is the proximal and distal attachments?Proximal - tendons of flexor digitorum longus
Distal = med. side of dorsal tendon expansion
Foot layer 2 - 43Quadratus plantae What is the proximal and distal attachments?Proximal = med. and lat. surface of calcaneus
Distal = lateral side of flexor digitorum longus tendon
Foot layer 2 - 44Flexor hallucis brevis What is the proximal and distal attachments?Proximal = cuboid and lat. cuneiform
Distal = both sides of base of prox. phalanx (big toe)
Foot layer 3 - 45Adductor hallucis What is the proximal and distal attachments?Proximal:
transverse head = plantar lig of MTP jts
oblique head = base of metatarsels 2-4
Distal = lat. side of base of prox. phalanx of hallux
Foot layer 3 - 46Flexor digiti minimi brevis What is the proximal and distal attachments?Proximal = base of 5th metatarsal
Distal = base of prox phalanx of 5 digit
Foot layer 3 - 47plantar interossei (3) What is the proximal and distal attachments?Proximal = base and med. side of metatarsal 3-5
Distal = med. side of prox. phalanges of 3-5 digits
Foot layer 4 - 48Dorsal interossei (4) What is the proximal and distal attachments?Proximal = adjacent sides of metatarsals 1-5
Distal:
1st = on medial side prox. phalanx of 2nd didgit
2-4th on lat. side prox. phalanx of 2-4 digits
Foot layer 4 - 49What 4 muscles are supplied by the medial plantar n. in the footabductor hallucis
flexor digitorum brevis
1st lumbrical
flexor hallucis brevis - 50platysma What is the proximal and distal attachments? Nerve supply?proximal = fascia above pectoralis major and
clavicle
distal = lateral neck and onto mandible
facial nerve (CN VII) - 51Stylohyoid What is the proximal and distal attachments? Nerve supply? action?Suprahyoid muscle
proximal = styloid process of temp. bone
distal = body of hyoid
facial nerve (CN VII)
raise hyoid bone - 52Digastric muscles What is the proximal and distal attachments? Nerve supply? action?suprahyoid
proximal:
ant. belly of digastric = digastric fossa of mandible
post. belly of digastric = mastoid notch of temp. bone
distal = joined by intermediate tendon - to body and greater horn of hyoid
ant. belly = mandibular division of trigeminal (CNV3)
post. belly = Facial n. (CNVII)
raise hyoid bone and depress mandible (digastric and mylohyoid) - 53Mylohyoid What is the proximal and distal attachments? Nerve supply? action?suprahyoid
proximal = mylohyoid line of mandible
distal = body of hyoid
mandibular division of trigeminal (CNV3)
raise hyoid bone and depress mandible (digastric and nylohyoid) - 54geniohyoid What is the proximal and distal attachments? Nerve supply? action?suprahyoid
proximal = inferior mantal spine of mandible
distal = body of hyoid
C1 via hypoglossal n. (CNXII)
raises hyoid bone - 55Sternohyoid What is the proximal and distal attachments? Nerve supply? action?infrahyoid
proximal = sternum
distal = hyoid
ansa cervicalis
depress hyoid bone - 56omohyoid What is the proximal and distal attachments? Nerve supply? action?infrahyoid
proximal = superior border of scapula
distal = inferior border of hyoid
ansa cervicalis (C1-3)
depress hyoid bone - 57sternothyroid What is the proximal and distal attachments? Nerve supply? action?infrahyoid
proximal = sternum
distal = thyroid
ansa cervicalis
depress hyoid bone - 58Thyrohyoid What is the proximal and distal attachments? Nerve supply? action?infrahyoid
proximal = thyroid
distal = hyoid bone
C1 via hypoglossal n. (CNVII)
depress mandible - 59Sternocleidomastoid What is the proximal and distal attachments? Nerve supply? action?proximal = mastoid process and superior nuchal line
distal:
sternal head = manubrium of sternum
clavicular head = medial 1/3 clavicle
motor = spinal accessory n. (CNXI)
pain and proprioception = cervical plexus C2,3
lateral rotate neck
extension at joint of back of head (C1 + occipital bone)
raise head when lying down - 60Trapezius What is the proximal and distal attachments? Nerve supply? action?proximal = medial 1/3 of nuchal line, nuchal ligament and spinous process C7-T12 vert.
distal = lateral 1/3 clavicle, acromion and spine of scapula
spinal accessory n. (CNXI) and cervical plexus C3,4 (proprioception)
ascending fibres: depress scapula
transverse fibres: retracts scapula
descending fibres: raises scapula
rotate glenoid cavity - 61Splenius capitis What is the proximal and distal attachments? Nerve supply? action?proximal = nuchal lig and spinous process C7-T3
distal = mastoid process and lateral 1/3 nuchal line
dorsal rami middle cervical
(post. rami C1-6)
extend neck, rotate
(bilateral = extend neck and head; unilateral = flexes and rotates to same side) - 62Levator scapulae What is the proximal and distal attachments? Nerve supply? action?proximal = transverse process of C1-4 vert.
distal = medial scapular borders between sup. angle and medial end of scapular spine
direct C3,4,5 via dorsal scapular n.
help control scapular position, elevate shoulder (with trapezius), shoulder fixed can laterallu flex neck to same size - 63Anterior scalene What is the proximal and distal attachments? Nerve supply? action?proximal = transverse process of C3-6 vert.
distal = rib 1 (scalene tubercle)
ant. rami (C4-7
flex neck (bilateral), tilt head to same side (unilateral) and elevate upper ribs - 64Middle scalene What is the proximal and distal attachments? Nerve supply? action?proximal = transverse process C2-7
distal = rib 1 (behind subclavian artery groove)
ant. rami = C3-7
flex neck (bilateral), tilt head to same side (unilateral) and elevate upper ribs - 65Posterior scalene What is the proximal and distal attachments? Nerve supply? action?proximal = transverse process C4-6
distal = rib 2
ant. rami = C5-7
flex neck (bilateral), tilt head to same side (unilateral) and elevate upper ribs - 66Splenius cervicis What is the proximal and distal attachments? Nerve supply? action?proximal = T3-6 spinous process
distal = C1-2 transverse process
post. rami C1-6
bilateral = extend neck and head; unilateral = flexes and rotates to same side - 67Semispinalis capitis What is the proximal and distal attachments? Nerve supply? action?proximal = C4 - T7 transverse process
distal = occipital bone (between superior and inferior nuchal lines)
post. rami
extends cervical spine (both), bend to same side, rotate to opposite side (one) - 68Longissimus capitis What is the proximal and distal attachments? Nerve supply? action?proximal = T1-T3 + C4-C7 transverse processes
distal = mastoid process
post. rami
extends head (both), flexes and rotates head to the same side - 69Rectus capitis posterior major What is the proximal and distal attachments? Nerve supply? action?proximal = C2 spinous process
distal = inf. nuchal line
suboccipital n. (post rami C1)
extend head (both) and rotate to same side (one) - 70rectus capitis posterior minor What is the proximal and distal attachments? Nerve supply? action?proximal = C1 post. tubercle
distal = inferior nuchal line
suboccipital n. (post. rami C1)
extend head (both) and rotate to same side (one) - 71Obliquus capitis superior What is the proximal and distal attachments? Nerve supply? action?proximal = C1 transverse process
distal = occipital bone (above inferior nuchal line)
suboccipital n. (post. rami C1)
extend head (both), tilts head to same side, rotates to opposite side (one) - 72obliquus capitis inferior What is the proximal and distal attachments? Nerve supply? action?proximal = C2 spinous process
distal = C1 transverse process
suboccipital n. (post rami C1)
extend head (both) and rotates to same side (one) - 73Temporalis What is the proximal and distal attachments? Nerve supply? action?proximal = temporal fossa and fascia
distal = coronoid process and ant. border of eth ramus of mandible
deep temporal n (x2) [from ant. division of mandibular division of trigeminal (CNV3)]
ant. and superior fibres elevate mandible
post. fibres retracts mandible - 74Masseter What is the proximal and distal attachments? Nerve supply? action?proximal = zygomatic arch
distal = lateral aspect of the ramus of the mandible
masseteric n. [from ant. division of CNV3]
elevate mandible - 75Lateral pterygoid What is the proximal and distal attachments? Nerve supply? action?proximal:
upper head = infratemporal surface of greater wing of sphenoid
lower head = lateral surface of eth lateral pterygoid plate
distal = neck of mandible and articular disk
n. to lateral pterygoid [ant. division of CNV3]
pulls neck of mandible forward with articular disc (protrusion = both); helps in lateral chewing movements with medial pterygoid (one side) - 76medial pterygoid What is the proximal and distal attachments? Nerve supply? action?proximal:
superficial head = tubercle of maxilla
deep head = medial surface of lateral pterygoid plate
distal = medial surface of the angle of mandible
n. to medial pterygoid [from the main trunk of mandibular division of trigeminal n. (CNV3)]
assist elevation - 77Name all the muscles coloured in
- 78Levator palpebrae superioris What is the proximal and distal attachments? Nerve supply? action?Proximal = orbit (roof)
distal = upper eyelid
oculomotor nerve (CNIII)
raises upper eyelid - 79Superior rectus What is the proximal and distal attachments? Nerve supply? action?proximal = annular ring
distal = sclera
oculomotor nerve (CNIII)
elevation, adduction, intorsion(rotates eyeball medially) - 80Inferior rectus What is the proximal and distal attachments? Nerve supply? action?proximal = annular ring
distal = sclera
oculomotor nerve (CNIII)
depression, adduction, extorsion (rotates eyeball laterally) - 81Medial rectus What is the proximal and distal attachments? Nerve supply? action?proximal = annular ring
distal = sclera
Oculomotor nerve (CNIII)
adduction - 82Lateral rectus What is the proximal and distal attachments? Nerve supply? action?proximal = annular ring
distal = sclera
Abducent nerve (CNVI)
abducts - 83Superior oblique What is the proximal and distal attachments? Nerve supply? action?Proximal = lesser wing of sphenoid bone
distal = sclera
Trochlear (CNIV)
intorsion, abducts, depression - 84Inferior oblique What is the proximal and distal attachments? Nerve supply? action?proximal = orbital floor
distal = sclera
oculomotor nerve (CNIII)
extorsion, elevation, abduction - 85Genioglossus What is the proximal and distal attachments? Nerve supply? action?Proximal = outside tongue
Distal = into tongue
Hypoglossal nerve
Depress tongue and protrude - 86Hyoglossus What is the proximal and distal attachments? Nerve supply? action?Proximal = outside tongue
Distal = into tongue
Hypoglossal nerve
depress tongue - 87Styloglossus What is the proximal and distal attachments? Nerve supply? action?proximal = outside tongue
Distal = into tongue
Hypoglossal nerve
elevates and retracts tongue - 88Palatoglossus What is the proximal and distal attachments? Nerve supply? action?proximal = outside tongue
distal = into tongue
vagus nerve in the pharyngeal plexus
elevates tongue (moves soft palate) - 89Superior pharyngeal constrictor What is the proximal and distal attachments? Nerve supply? action?proximal = lower part medial pterygoid plate; hamulus; pterygomandibular ligament, mandible, side of tongue
distal = pharyngeal tubercle of occipital bone, raphe, middle constrictor
pharyngeal plexus (vagus)
upper fibres pull post. pharyngeal wall anteriorly to close of nasopharynx
propel food to middle constrictoe - 90Middle pharyngeal constrictor What is the proximal and distal attachments? Nerve supply? action?Proximal = lower part of stylohyoid ligament and greater and lesser cornua of hyoid bone
distal = raphe; blend with inf. and sup. constrictors
pharyngeal plexus (vagus)
propel food towards inf. constrictor - 91Inferior pharyngeal constrictor What is the proximal and distal attachments? Nerve supply? action?Proximal = lamina of thyroid cartilage and cricoid cartilage
distal = raphe and blends with middle constrictor and oesophagus
pharyngeal plexus (vagus)
propel food to oesophagus
(made up of 2 parts: thyropharyngeus [sup] and cricopharyngeus [sphincter shape] - 92Palatopharyngeus What is the proximal and distal attachments? Nerve supply? action?proximal = hard palate and palatine apponeurosis
distal = lamina of thyroid cartilage
pharyngeal plexus (vagus)
elevate pharynx - 93Salpingopharyngeus What is the proximal and distal attachments? Nerve supply? action?proximal = cartilage of auditory tube
distal = blends with palatopharyngeus
pharyneal plexus (vagus)
elevate pharynx - 94Stylopharyngeus What is the proximal and distal attachments? Nerve supply? action?Proximal = base of styloid process of temp bone
distal = post. border of thyroid cartilage
glossopharyngeal n.
elevate pharynx and larynx during swallowing - 95Longus capitis What is the proximal and distal attachments? Nerve supply? action?proximal = transverse process of cervical verte. ant. tubercles C3-6
Distal = base of occipital
vertebral rami cervical spinal nerves C1-3
Flexion of the head - 96Longus colli What is the proximal and distal attachments? Nerve supply? action?Inferior oblique
Proxmal = T2/3
Distal = ant. tubercle of cervical transverse process C5,6
Superior oblique
proximal = ant. tubercle C3-5
distal = atlantal ant. tubercle
Vertical
proximal = ant. aspect T1-3
distal = C4-6
vertebral rami cervical spinal nerves C2-6
flexion of neck and rotation to opposite side via inf. oblique - 97Rectus capitis anterior What is the proximal and distal attachments? Nerve supply? action?proximal = ant. surface and root of transverse process fo atlas
distal = occipital bone (ant. to occipital condyle)
ventral rami of cervical nerves C1-2 loop
flexion of atlanto-occipital jt. - 98Rectus capitis lateralis What is the proximal and distal attachments? Nerve supply? action?Proximal = transverse process of atlas
distal = occipital bone (inf. surface of jugular process)
ventral rami of cervical nerves C1-2 loop
lateral flexion of head - 99Cricothyroid muscle What is the proximal and distal attachments? Nerve supply? action?Proximal = cricoid cartilage
distal = lamina and inferior cornu of thyroid cartilage
external laryngeal branch of vagus
tenses and elongates vocal folds - 100Thyroarytenoid What is the proximal and distal attachments? Nerve supply? action?proximal = inner surface of angle of thyroid cartilage
distal = anterolateral surface of arytenoid cartilages
recurrent laryngeal nerve (vagus)
pull artenoids forwards towards thyroid cartilage = shorten and relax vocal ligamnets - 101Posterior cricoarytenoid What is the proximal and distal attachments? Nerve supply? action?proximal = post. lamina of cricoid cartilage
distal = muscular process of arytenoid cartilage
recurrent laryngeal nerve (vagus)
pulls muscular process of arytenoid backwards - rotate vocal process laterally - ABDUCTION of vocal folds - 102Lateral cricoarytenoid What is the proximal and distal attachments? Nerve supply? action?proximal = upper edge of arch of cricoid cartilage
distal = muscular process of arytenoid cartilage
recurrent laryngeal branch (vagus)
pulls muscular process forward - rotate vocal process medially = ADDUCTION of vocal folds - 103Oblique arytenoid What is the proximal and distal attachments? Nerve supply? action?proximal = muscular process of arytenoid cartilage
distal = appex of opposite arytenoid cartilage
recurrent laryngeal branch of vagus
sphincter of laryngeal inlet
Some fibres form aryepiglottic muscles in aryepiglottic fold - 104Transverse arytenoids What is the proximal and distal attachments? Nerve supply? action?proximal = post. and medial surfaces of arytenoid cartilages
distal = opposite arytenoid cartilage
recurrent laryngeal nerve
closes post. part of rima glottis - 105Tensor tympani What is the proximal and distal attachments? Nerve supply? action?proximal = wall of auditory tube
distal = handle of malleus
CNV3
tenses tympanic membrane - 106Stapedius What is the proximal and distal attachments? Nerve supply? action?Proximal = pyramid of middle ear
distal = neck of stapes
CNVII
pull footplate of stapes laterally - 107Levator veli palatini What is the proximal and distal attachments? NERVE SUPPPLY??? action?proximal = pharyngotympanic tube and petrous part of temp. bone
distal = palatine apponeurosis
CNX in pharyngeal plexus
elevates soft palateduring swallowing and yawning - 108Tensor veli palatini What is the proximal and distal attachments? NERVE SUPPLY?? action?proximal = medial pterygoid plate, sphenoid bone and pharyngotympanic tube
distal = palatine apponeurosis
CNV3 (medial pterygoid nerve)
tenses soft palate, and opens pharyngotympanic tube during swallowing and yaning
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- Anatomy (Anatomy) Flashcards on Anatomy - muscles, created by Tara McLaughlin on 14/02/2017.
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- Tara McLaughlin
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