1) The Falx cerebri is : A. the deep groove between the precentral and postcentr

Question

1) The Falx cerebri is :

A. the deep groove between the precentral and postcentral gyri

B. thelobe of the cerebrum 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

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2) The brain requires such a large percentage of the body's otal blood flow because

A. it is such a large percentage of the body's total weight

B. its cells are always dividing to replace old cells

C. no glucose, the brain's exclusive energy source, is stored

D. it needs the heat to supply an alternative energy source

E. the movement of the blood stiumlates the growth of the neuronal cytoplasmic extensions

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3) Which of the following is NOT TRUE for cerebrospinal fluid?

A. it acts as a shock absorber for the brain

B. It may contain white blood cells

C. It is a medium for exchange of nutrients and wastes

D. It acts as a neurotransmitter in the brain

E. It is produced by filtration and secretion in choroid plexuses

Explanation / Answer

Answers-

1.- Option D - Falx cerebri is an extension of dura mater separating the cerebellar hemispheres ,

It is located in inner surface of the occipital bone. And have a sickle shape reassemblence.

2. Option - B - because cells are always regenerating and through blood brain get glucose which further get converted into ATP for energy build up.

3. Option D - because cerebrospinal fluid is not a neurotransmitter, and it is present in the cerebral cavity. As various examples of neurotransmitters are Acetylcholine etc.

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