Anatomy Exam Bones of the Cranial Vault 5

Question 1

Which suture separates the two parietal bones from each other along the midline?

Accepted Answer

Sagittal suture

Answer

The sagittal suture runs anteroposteriorly in the midline, separating the right and left parietal bones.

Question 2

The pterion, the thinnest region of the temporal fossa, is the junction of how many bones?

Accepted Answer

Four

Answer

The pterion is where four bones meet: the frontal, parietal, temporal, and greater wing of the sphenoid.

Question 3

The hypophyseal fossa, which houses the pituitary gland, is bounded anteriorly by which structure?

Accepted Answer

Tuberculum sellae

Answer

The tuberculum sellae forms the anterior boundary of the hypophyseal fossa (sella turcica), with the dorsum sellae forming the posterior boundary.

Question 4

Which type of ossification produces the bones of the cranial vault?

Accepted Answer

Intramembranous ossification

Answer

The flat bones of the cranial vault form by intramembranous ossification, where bone develops directly within a connective tissue membrane without a cartilage precursor.

Question 5

The asterion is the point of junction between the parietal, occipital, and which other bone?

Accepted Answer

Temporal bone

Answer

The asterion is located where the lambdoid, parietomastoid, and occipitomastoid sutures meet, joining the parietal, occipital, and temporal bones.

Anatomy Exam Practice Test

Anatomy Exam Practice Test

Anatomy Exam Bones of the Cranial Vault 5