51) The cavities within the brain are called A) sald. B) choroid plexuses C) nuc

Question

51) The cavities within the brain are called A) sald. B) choroid plexuses C) nuclel D) ventricles. E) commissures. 32) Fine control of body coordination and balance is a function of the A) cerebellum. B) hypothalamus C) thalamus. D) pitultary gland. E) reticular activating system 53) The falk cerebri is A) the deep groove between the precentral and postcentral gyri. B) the lobe of the cerebrum not visible on the surface C) an extension of the dura D) an extension of the dura mater separating the cerebellar hemispheres E) mater separating the cerebral hemispheres. 54) The brain requires such a large percentage of the body's total 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 stimulates the growth of the neuronal cytoplasmic extensions. 55) Paired masses of gray matter within the midbrain that are rich in dopamine and are involved in maintenance of muscle tone are the A) corpora quadrigemina. B) basal ganglia. C) mammillary bodies. D) substantia nigra. E) supraoptic nuclei. 56) The blood-brain barrier does not prevent passage of A) any hormones. B) most bacteria. C) vitamins. D) red blood cells. E) lipid-soluble substances.

Explanation / Answer

51.D.ventricles

52.A. Cerebellum

53.C. Extension of duramater that separates cerebral hemispheres

54.C.no glucose, the brains exclusive energy source is stored

55.D.substantia nigra

56. E. lipid soluble substances

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