Skull

Definition

The skull is a bony structure that forms the head in vertebrates, supporting the structures of the face and protecting the brain. It consists of 22 bones joined together by sutures.

5 Must Know Facts For Your Next Test

1. The skull is divided into two main parts: the cranium and the facial skeleton.
2. Eight bones make up the cranium, which encloses and protects the brain.
3. Fourteen bones form the facial skeleton, providing shape and function to areas like the mouth and nasal cavity.
4. The foramen magnum is a large opening at the base of the skull through which the spinal cord passes.
5. Sutures are fibrous joints connecting skull bones, allowing for growth during infancy and childhood.

Review Questions

• What are the two main parts of the skull?
• How many bones make up the cranium?
• What is the purpose of sutures in the skull?

Related terms

cranium:

The part of the skull that encloses and protects the brain.

facial skeleton: The portion of the skull that supports facial structures including muscles used for expression.

foramen magnum: A large opening at the base of the skull that allows passage of the spinal cord.