arm AOIN

Question 1

biceps brachii

Answer 1

A: flex elbow, supinate forearm, flex shoulderO: short head - carocoid process of scapula
: long head - supraglenoid tubercle of scapula
I: tuberosity of radius and aponeurosis of biceps brachii
N: musculocutaneous C5,6

Question 2

Triceps Brachii

Answer 2

A: all heads - extend the elbow
: long head - extend and adduct the shoulder
O: long head - infraglenoid tubercle
: lateral head - posterior surface of proximal half og humerus
: medial head - posterior surface of distal half of humerus
I: olecranon process of ulna
N: radial C6,7,8,T1

Question 3

Coracobrachialis

Answer 3

A: flex and adduct the shoulder
O: coracoid process
I: medial surface of scapula
N: musculocutaneous C6,7