To Allow the Brain to Fit Inside the Skull,the Brain

question 21

Multiple Choice

To allow the brain to fit inside the skull,the brain folded in on itself forming the ___ and ___.

• A) gyri and thalamus
• B) gyri and pons
• C) pons and sulci
• D) gyri and sulci

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Definitions:

Sphenoid

A butterfly-shaped bone at the base of the skull, part of the cranium, and contains the sphenoid sinus.

Ethmoid

A porous bone located between the eyes and forming part of the nasal cavity and the eye sockets.

Zygomatic

Pertaining to the cheekbone or zygoma, which is a bone that forms part of the orbit of the eye and the cheek.

Temporal

Pertaining to the temporal bone of the skull, near the temples, and involved in hearing and balance.