Upper Arm Muscles

Question 1

Biceps Brachii

Answer 1

O: Short Head:
Tip of the Coracoid Process

Long Head:
Supraglenoid Tubercle

I: Radial and Ulnar Tuberosity

A: Flexes the elbow, flexes shoulder, supination

N: Musculocutaneous Nerve (C5-6)

Question 2

Brachialis

Answer 2

O: Lower ½ of the Anterior Humerus

I: Ulnar Tuberosity

A: Flexes the Elbow

N: Musculocutaneous Nerve (C5-6)

Question 3

Triceps Brachii

Answer 3

O: Long Head:
Infraglenoid Tubercle

Lateral Head:
Posterior Humerus above the Radial Groove

Medial Head:
Posterior Humerus Below the Radial Groove

I: Olecranon Process

A: Extends the Shoulder and Elbow

N: Radial Nerve (C6-8)

Question 4

Anconeus

Answer 4

O: Lateral Epicondyle of the Humerus

I: Lateral Olecranon Process

A: Extends the Forearm

N: Radial Nerve (C7-T1)