Week 1: Proximal bones, plexuses and patterns

Question 1

From above, the clavicle looks like a ____ curve?

Answer 1

A sine curve.

Question 2

• What shape is the medial end of the clavicle?

- What shape is the lateral end of the clavicle?

Answer 2

• Bulbous.

- Flattened, tightly curved.

Question 3

Which side of the clavicle is smooth?

Answer 3

The superior side.

Question 4

What is the role of the clavicle in the mechanics of the shoulder?

Answer 4

• Strut that holds shoulder laterally.

- Provides a firm base for the limb to be positioned in 3D space.

Question 5

Which two muscles (attached to the clavicle) are innervated by the accessory nerve (CN XI)?

Answer 5

• Sternocleidomastoid.

- Trapezius.

Question 6

• What two nerves supply the pectoralis major muscle?

- What bone is the pectoralis major muscle attached to?

Answer 6

• The medial and lateral pectoral nerves, arising from the brachial plexus.
• The clavicle.

Question 7

• What nerve supplies the deltoid muscle?

- What bone is the deltoid muscle attached to?

Answer 7

• Axillary nerve.

- The clavicle.

Question 8

What type of animals do NOT have clavicles?

Answer 8

Quadrupedals (animals that walk on all fours).