Question

The tentorium cerebella is:

a. a deep groove between the precentral and postcentral gyri
b. the lobe of the cerebellum not visible on the surface
c. an extension of the dura mater separating the cerebral hemispheres
d. an extension of the dura mater separating the cerebellar hemispheres
e. an extension of the dura mater separating the cerebrum from the cerebellum

Answer 1

The tentorium cerebelli is an extension of the dura mater separating the cerebrum from the cerebellum, acting as a supportive shelf between them.

Step-by-step explanation:

The tentorium cerebelli is an extension of the dura mater that creates a partition within the cranial cavity. Specifically, it separates the cerebrum from the cerebellum. This shelf-like structure is one of the infoldings of the dura mater that supports the occipital lobes of the cerebrum above and provides a protective space for the cerebellum beneath. It is also involved in supporting the venous sinuses.