Flashcards
Upper Limb
Cards in this deck (31)
- 1What is the Axilla?The pyramidal area at the junction of the upper extremity and the trunk
- 2What are the boundaries of the AxillaMedially: Ribs 1-4
Laterally: the humerus
Anteriorly: the pectoralis major and pectorals minor muscles
Posteriorly: scapula and subscapularis, teres major, latissimus dorsi muscles - 3What are the contents of the Axilla? (8)1. Axillary artery
2. Axillary vein
3. Brachial plexus
4. Claviopectoral fascia
5. proximal part of biceps brachia
6. Proximal part of coracobrachialis
7. Axillary process of the breast
8. Collections of lymph nodes which drain the UL and chest wall - 4What are the branches of axillary arteryArises from subclavian right underneath first rib
1. Superior thoracic
2. Thoraco-acromial artery
3. Subscapular artery
4. Anterior circumflex humeral artery
5. Posterior circumflex humeral artery
6. Lateral thoracic - 5Pectoralis Major: Origin, Insertion, Function, InnervationOrigin:
- Clavicular head; medial half of the clavicle
- Sternocostal head: anterior surface of sternum, first 7 costal cartilages
Insertion: lateral lip of inter tubercular sulcus
Function: adduction and medial rotation of arm. Clavicular head: flexion. Sternocostal head: tension of flexed arm
Innervation: medial and lateral pectoral nerves - 6Pectoralis minor: origin, insertion, function, innervationOrigin: anterior surfaces of ribs 3-5
Insertion: coracoid process of scapula
Function: pulls tip of shoulder down, protracts scapula
Innervation: medial pectoral nerve - 7Subclavius: origin, insertion, function, innervationOrigin: first rib at the junction between rib and costal cartilage
Insertion: inferior surface of middle one third of clavicle
Function: pulls tip of shoulder down, pulls clavicle medially to stabilise sternoclavicular joint
Innervation: nerve to subclavius - 8Serratus Anterior: Origin, Insertion, Function, InnervationOrigin: lateral surfaces of upper 1-8 ribs and deep fascia overlying intercostal spaces
Insertion: medial border of scapula anteriorly
Function: protraction and retraction of the scapula, keeps medial border and inferior angle of scapula opposed to thoracic wall
Innervation: long thoracic nerve - 9Subscapularis: origin insertion, function, innervationOrigin: medial 2/3 of sub scapular fossa
Insertion: lesser tubercle of humerus
Function: media rotation of the arm at GH joint
Innervation: upper and lower subscapular nerves - 10Teres Major: Origin, Insertion, Function, InnervationOrigin: posterior surface of inferior angle of scapula
Insertion: medial lip of inter tubercular sulcus of humerus
Function: medial rotation and extension of the arm
Innervation: lower subscapular nerve - 11Latissimus dorsi: Origin, Insertion, Function, InnervationOrigin: spinous process of lower 6 thoracic vertebrae, spinous processes of lumbar vertebrae, iliac crest, lower 3-4 ribs
Insertion: floor of intertubercular sulcus
Function: adduction, medial rotation, and extension of the arm
Innervation: thoracodorsal nerve - 12Branches of the brachial plexus
- 13What are the muscles involved in Elevation of ScapulaSuperior Trapezius (Accessory N)
Levator Scapulae (C3-5)
Rhomboids (Dorsal scapular N) - 14What are the muscles involved in depression of scapulaPectoralis Minor (medial pectoral N)
Inferior trapezius
Serratus anterior; inferior part (long thoracic part) - 15What are the muscles involved in protraction of the scapulaPectoralis Minor
Serratus anterior - 16What are the muscles involved in retraction of the scapulaRhomboids
Middle trapezius
Latissimus dorsi (thoracodorsal N) - 17What are the muscles involved in downward rotation of scapulaLevator scapulae
Rhomboids
Latissimus dorsi
Pectoralis Minor - 18What are the muscles involved in upward rotation of scapulaTrapezius
Serratus anterior - 19Flexors of the shoulder jointpectoralis major (clavicular part)
Deltoid (anterior part) - 20Extensors of the shoulder jointlatissimus dorsi
deltoid - 21Adduction of the shoulder jointpectoralis major
latissimus dorsi
also teres major - 22Abduction of the shoulder jointDeltoid
abduction is initiated by supraspinatus muscle - 23Rotator cuff musclessupraspinatus
infraspinatus
teres minor
Subscapularis - 24medial rotators of Rotator Cuffsubscapularis
Teres major
Pec major - 25lateral rotators of rotator cuffinfraspinatous
teres minor - 26Describe the anatomy of the ClavicleS-shaped bone with 2 curves:
- Medial curse convex anteriorly
- Lateral curve concave anteriorly
Extends from sternum to scapula above - 27What is the shoulder/pectoral girdlebony skeleton which connects the upper limb to the axial skeleton
consists of clavicle and scapula - 28Describe the role of the joints of the shoulder girdleActs as a strut to keep the arm away from the thorax while allowing the arm maximum freedom of movement
Strengthened by the ligaments present - 29List the ligaments of the shoulder girdleSternoclavicular ligaments
Acromioclavicular ligaments
Coracoclavicular ligaments - 30Describe the coracoclavicular ligaments1. conoid ligament
2. trapezoid ligament
Help prevent dislocation of the clavicle - 31Describe the anatomy of the scapula- Triangular flat bone on posterolateral aspect of thorax, overlying 2nd and 7th ribs
- Spine of scapula separates supraspinous fossa from infraspinous fossa
- Acromion: point of shoulder
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- Flashcards on Upper Limb, created by robo bean on 11/07/2020.
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- robo bean
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