Chapter 7: The Skeleton

Question 1

The skeletal system, or skeleton, is composed of _____, _____, _____, and _____.

Answer 1

Bones, cartilages, joints, and ligaments.

Question 2

What are the two divisions of the skeleton?

Answer 2

1. Axial skeleton

2. Appendicular skeleton

Question 3

What does the axial skeleton contain/do?

Answer 3

The skull, vertebral column, and thoracic cage. It…

1. Form longitudinal axis of body
2. Support head, neck, and trunk
3. Protect brain, spinal cord, and thoracic organs

Question 4

The skull joints are called _____.

Answer 4

Sutures

Question 5

What are the features of the occipital bone?

Answer 5

Articulates with parietal, temporal, and sphenoid bones. Has a foramen magnum which is a “large hole” through which brain connects with spinal cord. The hypoglossal canal allows cranial nerve XII to pass through.

Question 6

What are the features of the temporal bones?

Answer 6

Paired bones that make up inferolateral aspects of skull and parts of cranial base. It has 2 major regions:
1. Squamous: zygomatic processes articulate with
zygomatic bone to form zygomatic arch and
mandibular fossa makes up part of
temporomandibular joint
2. Tympanic: surround external acoustic meatus
(external ear canal)