Arm Muscles

Question 1

Biceps Brachii

Answer 1

O- Long Head: Supraglenoid Tubercle
Short Head: Coracoid Process

I- Radial tuberosity, bicipitial aponeurosis

A- Flexing the shoulder, flexion of elbow and supination of the wrist

N- Musculocutaneous Nerve

Question 2

Bracialis

Answer 2

O- Anterior distal 2/3 of humerus

I- Coronoid process of the ulna

A- Flexion of the elbow

N- Musculocutaneous Nerve

Question 3

Triceps Brachii

Answer 3

O- Long Head: Infraglenoid tubercle of scapula
Lateral Head: Proximal 1/3 of the humerus lateral to radial groove
Medial Head: Distal 1/3 of the humerus medial to lateral groove

I- Olecranon Process

A- Extension of the humerus, extension of the elbow

N- Radial Nerve

Question 4

Brachioradialis

Answer 4

O- Supracondylar line of the humerus

I- Radial Styloid

A- Flexion of the elbow (mid-prone)

N- Radial Nerve

Question 5

Anconeus

Answer 5

O- Posterior aspect of lateral epicondyle of the humerus

I- Lateral surface of the olecranon process

A- Extends the elbow

N- Radial

Question 6

Pronator Teres

Answer 6

O- Medial epicondyle of the humerus

I- Anterior surface of radius (1/2 way)

A- Pronation of the forearm

N- Median Nerve

Question 7

Pronator Quadratus

Answer 7

O- Medial anterior surface of the distal ulna

I- Lateral anterior surface of the distal radius

A- Pronation of the forearm

N- Median Nerve

Question 8

Supinator

Answer 8

O- Lateral epicondyle, supinator crest of ulna, radial collateral ligament, annular ligament

I- Lateral, posterior and anterior surface of radius

A- Supination of the forearm

N- Radial Nerve

Question 9

Extensor Carpi Radialis Longus

Answer 9

O- Lateral Epicondyle

I- Base of the 2nd metacarpal

A- Extension of the wrist, abduction of the wrist

N- Radial Nerve

Question 10

Extensor Carpi Radialis Brevis

Answer 10

O- Lateral Epicondyle

I- Base of the 3rd metacarpal

A- Extension of the wrist, abduction of the wrist

N- Radial Nerve

Question 11

Extensor Carpi Ulnaris

Answer 11

O- Lateral epicondyle

I- Base of 5th metacarpal

A- Extension of the wrist

N- Radial Nerve

Question 12

Flexor Carpi Radialis

Answer 12

O- Medial Epicondyle

I- Base of the 2nd and 3rd metacarpal

A- Flexion of the wrist, abduction of the wrist

N- Median Nerve

Question 13

Flexor Carpi Ulnaris

Answer 13

O- Medial epicondyle, medial margin of the olecranon process of the ulna

I- Pisiform, hook of hamate and base of 5th metacarpal

A- Flexion of the wrist, adduction of the wrist

N- Ulnar nerve

Question 14

Palmaris Longus (if show)

Answer 14

O- Medial Epicondyle

I- Palmar Fascia

A- Draws tension on the palmar fascia

N- Median Nerve