The flashcards below were created by user
gurpleguy
on FreezingBlue Flashcards.
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axilla (apex)
1st rib, scapula, and clavicle
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axilla (anterior wall)
pectoralis major, pectoralis minor, clavipectoral fascia
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axilla (posterior border)
subscapularis, teres major, latissimus dorsi
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axilla (medial wall)
serratus anterior, upper rubs
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axilla (lateral wall)
intertubercular groove
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axilla (base or outlet)
axillary fascia
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first part of axillary artery
- medial to pectoral minor
- superior (supreme) thoracic artery
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second part of the axillary artery
- thoracoacromial trunk (clavicular, deltoid, pectoral, acromial branches)
- Lateral thoracic artery
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third part of the axillary artery
- posterior circumflex humeral artery
- anterior circumflex humeral artery
- subscapular artery (circumflex scapulary artery, thoracodorsal artery)
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coracobrachialis
- origin- coracoid process of the scapula
- insertion- medial aspect of the humerus, mid-shaft
- innervation- musculocutaneous nerve (C5-C6, C7)
- action- flexion at the shoulder joint
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Biceps brachii (long and short head)
- origin- supraglenoid tubercle, coracoid process of the scapula
- insertion- radial tuberosity
- innervation- musculocutaneous (C5-C6, C7*)
- action- flexion at the elbow joing, flexion at the shoulder joint, supination
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brachialis
- origin- anterior aspect of the humerus, lower 1/2
- insertion- ulnar tuberosity
- innervation- musculocutaneous nerve (C5-C6, C7*)
- action- flexion at the elbow joint
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triceps brachii (long head)
- origin- infraglenoid tubercle
- insertion- olecranon of the ulna
- innervation- radial nerve (C5-T1)
- action- extension at the shoulder joint, extension at the elbow joint
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triceps brachii (lateral head)
- origin- posterior humerus lateral and superior to the radial groove
- insertion- olecranon of the ulna
- innervation- radial nerve (C5-T1)
- action- extension at the elbow joint
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triceps brachii (medial head)
- origin- posterior humerus medial and inferioir to the radial groove
- insertion- olecranon of the ulna
- innervation- radial nerve (C5-T1)
- action- extension at the elbow joint
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bracioradialis
- origin- lateral epicondyle and supracondylar ridge of the humerus
- insertion- styloid process of the radius
- innervation- radial nerve (C5-T1)
- action- flexion at the elbow joint
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extensor carpi radialis longus
- origin- lateral epicondyle and supracondylar ridge of the humerus
- insertion- base of the 2nd metacarpal
- innervation- radial nerve (C5-T1)
- action- extension at the wrist joint, abduction at the wrist
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extensor digitorum
- origin- lateral epicondyle and supracondylar ridge of the humerus
- insertion- middle and distal phalanges of digits (2-5 via extensor expansion)
- innervation- posterior interosseous nerve
- action- extension of the MP joint of digits 2-5
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extensor digiti minimi
- origin- lateral epicondyle and supracondylar ridge of the humerus
- insertion- extensor expansion
- innervation- posterior interosseous nerve
- action- extension of the MP joint of digit 5
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extensor carpi ulnaris
- origin- lateral epicondyle and supracondylar ridge of the humerus
- insertion- base of the 5th metacarpal
- innervation- posterior interosseous nerve
- action- extension at the wrist joint, adduction at the wrist
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supinator
- origin- radius, ulna and interosseous membrane
- insertion- radius
- innervation- deep radial nerve
- action- supination
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abductor pollicis longus
- origin- radius, ulna and interosseous membrane
- insertion- base 1st metacarpal
- innervation- posterior interosseous neerve
- action- abduction of the thumb
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extensor pollicis longus
- origin- radius, ulna and interosseous membrane
- insertion- base of the distal phalanx of the thumb
- innervation- posterior interosseous neerve
- action- extension of the thumb
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extensor indicis
- origin- radius, ulna and interosseous membrane
- insertion- extensor expansion of digit 2
- innervation- posterior interosseous nerve
- action- extension of the MP joint of digit 2
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extensor pollicis brevis
- origin- radius, ulna and interosseous membrane
- insertion- base of the proximal phalanx of the thumb
- innervation- posterior interosseous nerve
- action- extension of the thumb
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triangular interval
deep brachial, radial nerve
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cubital fossa
- border- line between lateral and medial epicondyle, pronator teres muscle (medial), brachioradialis muscle (lateral)
- roof- antebrachial fascia, bicipital aponeurosis
- floor- brachalis muscle and tendon, supinator, pronator teres
whats runs through it- biceps tendon, brachial artery, median nerve
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