Muscles of the Posterior Arm Flashcards

1
Q

Triceps Brachii (long head)

A

origin: infraglenoid tubercle
insertion: olecranon of the ulna
innervation: radial N. (C5-T1)
action: extension at the elbow joint, extension at the shoulder

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2
Q

Triceps Brachii (lateral head)

A

origin: posterior humerus lateral and superior to the radial groove
insertion: olecranon of the ulna
innervation: radial N. (C5-T1)
action: extension at the elbow joint

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3
Q

Triceps Brachii (medial head)

A

origin: posterior humerus medial and inferior to the radial groove
insertion: olecranon of the ulna
innervation: radial N. (C5-T1)
action: extension at the elbow joint

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