Question

5 The type of neuroglia that wrap around capiltlaries in the blood -brain barrier are the A) astrocytes B) Schwann cells. C) D) microglia. E) ependymal cells. 58) The main relay center for conducting information between the spinal cord and the cerebrum is the A) thalamus. B) insula. C) corpus callosum D) cerebellar peduncles E) tentorium cerebelli. s9) The brain stem is made up of the A) cerebellum, pons, and hypothalamus. B) medulla oblongata, thalamus, and midbrain. C medulla oblongata, hypothalamus, and pons. D) medulla oblongata, pons, and midbrain. E) midbrain, hypothalamus, and thalamus 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. ao) 61) Superior to the hypothalamus and between the halves of the thalamus is the A) subthalamus. B) third ventricle. C) fourth ventricle. D) superior sagittal sinus. E) midbrain. The function of a choroid plexus is to A) receive sensations from the viscera. B) send motor impulses to the diaphragm. C) produce cerebrospinal luid. D) reabsorb cerebrospinal fluid E) transmit impulses from one cerebral hemisphere to the other. 42)

Answer 1

57 ans- astrocytes

Astrocytes are are the largest and most numerous neuroglia in the CNS which maintaining the Blood-Brain Barrier and restrcting the movement of the substance between the neuorns of CNS and blood.

58-Thalamus

the thalamus is located superior to the midbrain and is the main relay center for conducting information between the spinal cord and cerebrum.

59- ans-medulla oblongata, pons, and midbrain.

medulla oblongata controls involuntary activities such as heart rate and breathing.Pons and midbrain acts as pathways connecting various part of the brain with each other.

60- ans-D

61- Third ventricle

This is a narrow fluid-filled cavity found along the midline superior to the hypothalamus and between the right and left halves of the thalamus.