BIOD 152 MODULE 2 EXAM | PORTAGE LEARNING ACTUAL QUESTIONS & VERIFIED ANSWERS

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BIOD 152 MODULE 2 EXAM | PORTAGE
LEARNING ACTUAL QUESTIONS & VERIFIED
ANSWERS



This is the most superficial layer of the brain meninges:-correct-answer-Dura
Mater (Menix)




This layer of the meninges is tightly attached to the brain.:-correct-answer-Pia
mater (Menix)




The _______ fissure separates the right and left cerebral hemispheres.:-correct-
answer-median




The ______ fissure separates the cerebrum from the cerebellum.:-correct-answer-
Transverse




Describe the function of the brain ventricles.:-correct-answer-There are four
ventricles in the interior of the brain, chambers filled with cerebrospinal fluid
which is produced there. Once formed the CSF circulates through the ventricles
and into the subarachnoid space bathing and floating the brain.

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What is the purpose of the blood-brain barrier? Describe its maintenance from a
cellular level.:-correct-answer-The blood-brain barrier is a diffusion barrier which
prevents most particles from entering the central nervous system tissue, keeping
the brain and spinal cord separate from general blood circulation. The blood-brain
barrier is formed by the relatively impermeable brain capillaries, due to the glial
cells astrocytes. Maintenance of the blood-brain-barrier is important to provide a
stable chemical environment for the nervous system.




All the following are functions of the hypothalamus except::-correct-answer-
Relays sensory impulses to the cerebrum




This ventricle is located anterior to the cerebellum.:-correct-answer-fourth




What is the largest portion of the brain?:-correct-answer-Cerebrum




This region of the brain acts to coordinate multiple sources of sensory
information.:-correct-answer-Association area