, BIOD 152 Module 2 Exam
1. This is the most superficial layer of the brain meninges
Answer: Dura Mater (Menix)
2. This layer of the meninges is tightly attached to the brain.
Answer: Pia mater (Menix)
3. The fissure separates the right and left cerebral hemispheres.
Answer: median
4. The fissure separates the cerebrum from the cerebellum.
Answer: Transverse
5. Describe the function of the brain ventricles.
Answer: There are four ventricles in theinterior 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.
6. What is the purpose of the blood-brain barrier? Describe its maintenance from a cellular
level.
Answer: The blood-brain barrier is a diffusion barrier which preventsmost 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 stablechemical environment for the nervous system.
7. All the following are functions of the hypothalamus except:
Answer: Relays sensoryimpulses to the cerebrum
8. This ventricle is located anterior to the cerebellum.
Answer: fourth
9. What is the largest portion of the brain?
Answer: Cerebrum
10. This region of the brain acts to coordinate multiple sources of sensoryinformation.
Answer: Association area
11. This region of the brain controls decision making skills
Answer: Frontal lobe
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