Pectoral Girdle

Question 1

What separates the anterior and posterior arm

Answer 1

Intermuscular septum

Question 2

What is the intermuscular septum

Answer 2

Deep fascia which surrounds the arm

Question 3

What muscles lies in the posterior compartment of the arm

Answer 3

Triceps brachii

Question 4

How many muscle bellies/heads does the triceps brachii have

Answer 4

3

Question 5

What happens to the three muscle bellies of the triceps brachii

Answer 5

Converge via a common tendon onto a single insertion point

Question 6

What is the insertion of the triceps brachii

Answer 6

Olecranon of the ulna

Question 7

Contraction of the triceps brachii causes what movement

Answer 7

Extension at the elbow

Question 8

What are the names of the three heads of the triceps

Answer 8

Long head (most medial part of triceps)
Lateral head
Medial head

Question 9

Where is the origin of the long head

Answer 9

Infraglenoid tubercule of the scapula

Question 10

Where is the origin of the lateral head

Answer 10

Posterior humerus

Proximal to the radial groove

Question 11

Where is the origin of the medial head

Answer 11

Posterior humerus

Distal to the radial groove

Question 12

What movement does the long head of the triceps brachii of the shoulder joint

Answer 12

Extension