The function of arachnoid villi is to A) reabsorb cerebrospinal fluid. B) produc

Question

The function of arachnoid villi is to A) reabsorb cerebrospinal fluid. B) produce cerebrospinal fluid. C) hold the meninges onto the brain. D) provide nourishment for neurons in the CNS d3) conduct impulses from one cerebral hemisphere to the other. The blood-CSF barrier is composed of A) astrocytes. B) oligodendrocytes. C) myelin. D) dense iregular connective tissue E) ependymal cells. 44) The median and lateral apertures are the connection between the A) right and left cerebral hemispheres. 45) B) right and left cerebellar hemispheres. C) fourth ventricle and subarachnoid space. D) third and fourth ventricles. E) lateral ventricles and third ventricle. d6) If a blockage occurred in the interventricular foramina, what would be the likely result? A) hydrocephalus. B) anosmia. C) blindness. D) deafness. E) encephalitis. 47 The pneumotaxic and apneustic centers are located in the A) medulla oblongata. B) pons. C) cerebellum. D) hypothalamus. E) cerebral cortex. 48) Neurons from proprioceptors relay messages to the cerebellum by way of A) inferior olivary nucleus B) inferior cerebellar peduncles. C) middle cerebellar peduncles. D) lateral geniculate nucleus E All are correct

Explanation / Answer

Question 3

Answer is A (reabsorb cerebrospinal fluid)

These are knob-like structures present in arachnoid mater and are responsible for reabsorption of CSF.

Question 4

Answer E (ependymal cells)

It is the type of brain cells. the nervous system consists of five types of cells called neuroglia or glial cells. cSF and blood barrier is formed by ependymal cells.

Question 5

Answer is C

Fourth ventricle and subarachnoid space. the median and lateral ventricles are foramina Magendie and foramen Luschka.

Question 6

Answer is A (Hydrocephalus)

The drainage of CSF occurs through interventricular foramina and blockage of this leads to increased pressure in ventricles and damage. This condition is called hydrocephalus.

Question 7

Answer is B (Pons)

These are respiratory centers located in the pons. Apneustic center rugulate in respiration and pneumotaxic center inhibit respiration.

Question 8

Answer is A

inferior Olivary nucleus

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