Cubital fossa and forearm Flashcards
1
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Boundaries of cubital fossa
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Medial: pronator teres Lateral: brachioradialis Superior: Line between medial and lateral humeral epicondyles
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Contents of cubital fossa
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biceps brachii tendon, brachial artery and vein, proximal radial and ulnar arteries and veins, median and radial nerves
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Roof od cubital fossa
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Bicipital aponeurosis
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5
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Connection between radius and ulna
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Interosseous membrane
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7
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Tiny yellow branch is common interosseus artery
Tiny orange is posterior interosseus artery
Black is radial and ulnar arteries
Pink is anterior osseous nerve
Green is anterior interosseus artery
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•Brachioradialis
–Action: **Flexes forearm**
–Proximal attachment: Lateral supracondylar ridge of humerus
–Distal attachment: Distal radius
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Green
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•Supinator
–Action: Supinates forearm
–Proximal attachment:
Lateral epicondyle of humerus
–Distal attachment: Proximal radius
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•Extensor pollicis brevis
–Action: Extends proximal phalanx of thumb at metacarpophalangeal joint
–Proximal attachment: Posterior radius
–Distal attachment: Base of proximal phalanx of thumb
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•Extensor pollicis longus
–Action: Extends distal phalanx of thumb
–Proximal attachment: Posterior ulna
–Distal attachment: Base of distal phalanx of thumb
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•Extensor indicis
–Action: Extends digit 2
–Proximal attachment: Posterior ulna
–Distal attachment: Extensor expansion of digit 2
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Radial artery on floor of anatomical snuffbox
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