Muscles of Brachium

Question 1

Triceps brachii long head

Answer 1

Origin: infraglenoid tubrecle scap
Insertion: olecranon
Action:ext elbow, ext gh
Innervation: radial nerve (C5-7)

Question 2

Triceps brachii medial head

Answer 2

Origin:post surf humerus
Insertion:olecranon
Action:ext elbow
Innervation: radial nerve (C5-7)

Question 3

Triceps brachii lateral head

Answer 3

Origin: post surf humerus
Insertion: olecranon
Action: ext elbow
Innervation: radial nerve (C5-7)

Question 4

Anconeus

Answer 4

Origin: lateral epicondyle humerus
Insertion: olecranon
Action: extend elbow
Innervation: radial nerve (C5-7)

Question 5

Coracobrachialis

Answer 5

Origin: coracoid process scap
Insertion:humerus
Action: flex gh, add gh, horz add gh
Innervation: musculocutaneous (C5-7)

Question 6

Brachialis

Answer 6

Origin: anterior humerus
Insertion:ulnar tuberosity
Action: flex elbow
Innervation: musulocutaneous (C5-7)

Question 7

Biceps brachii long head

Answer 7

Origin: supraglenoid tubercle scap
Insertion: radial tuberosity
Action: flex elbow, supinate RU, Flex gh
Innervation: musculocutaneous (C5-7)

Question 8

Biceps brachii short head

Answer 8

Origin: coracoid process scap
Insertion: radial tuberosity
Action: flex elbow, supinate RU, flex gh
Innervation: musculocutaneous (C5-7)