Myology of the Arm

Question 1

Coracobrachialis Attachments

Answer 1

• Coracoid process

- Middle, medial humerus

Question 2

Coracobrachialis Movements

Answer 2

G-H Flexion

G-H Adduction

Question 3

Biceps Brachii Attachments

Answer 3

• (Long Head) through Bicipital Groove to Supraglenoid Tubercle
• (Short Head) Coracoid Process
• Radial Tuberosity. Bicipital Aponeurosis

Question 4

What does the tendon of Biceps Brachii have? Why?

Answer 4

Tendon sheath to protect it from the transverse humeral ligament

Question 5

What does the transverse humeral ligament do?

Answer 5

Holds the tendon of biceps brachii in place during contraction/movement

Question 6

What is the bicipital aponeurosis?

Answer 6

Fascia that runs from the biceps tendon and merges with the fascia of the anterior forearm

Question 7

Actions of Biceps Brachii

Answer 7

G-H Flexion (long head)
Elbow Flexion (PM in supination)

Question 8

Brachialis Attachments

Answer 8

• Anterior distal 1/2 of the humerus

- Ulnar tuberosity, coronoid process

Question 9

Actions of Brachialis

Answer 9

PM Elbow Flexion

Question 10

Triceps Brachii Attachments

Answer 10

• (Long Head) Infraglenoid tubercle
• (Lateral Head) Posterior proximal humerus (superior to radial groove)
• (Medial Head) Posterior distal humerus (inferior to radial groove)
• Olecranon Process

Question 11

Actions of Triceps Brachii

Answer 11

G-H Extension

PM Elbow Extension

Question 12

Anconeus Attachments

Answer 12

• Lateral epicondyle

- Olecranon Process

Question 13

Action of anconeus

Answer 13

Elbow extension (assists triceps)