1o. What prevents or enter? A)a inhibitor slows some chemicals from a threshold

Question

1o. What prevents or enter? A)a inhibitor slows some chemicals from a threshold b)a blood-brain barrier cjan endoplasmio bra entering the brain, while allowing others to differential-drug 11. Cerebrospinal fluid (C SF) can a)act c)is manufactured by the cerebellum t as a shock-absorber und near the arachnoid layer d)all of the above e)only a and b 12. Astroglia (astrocytes) a)guide the growth of c)make astronauts d)make now neurons after an injury a)guide the growth of dendrites b)dilate the blood vessels ocysts ocin be comprised of what type of cell? A)Schwann cells b)radial glia d)microglia e)mitochondria 14. The cicerebellum d)hippocampus e)cortex ie the outer layer of the cerebral hemispheres. A)corpus callosum 15. The surface of your brain closest to your forehead is thepart c)anterior d)posterior elateral , while "grey matter" refers to 16. In the nervous system, "white matter" refers to ns:cell bodies A)brain:spinal cord b)spinal cord: brain c)cell bodies: axons d)axo e)cortex:brainstem 17. The structure which connects the right and left hemispheres is called the a)corpus callosum b)brainstem c)hemispheric nerve d)thalamus e)hypothalamus 18. The main function of the occipital cortex is a)motor b)visual c)auditory d)somatosensory e)olfactory 19. The cerebellum contributes to the control of A)hunger b)temperature c)olfaction d)movement e)hearing 20. Damage to the motor pathways in the spinal cord would result in a)loss of movement b)loss of sensation c)a tingling sensation d)the inability to move or feel e)both b and c 21. The cerebellum, medulla and pons are found in the a)spinal cord b)cortex c)ocipital lobe d)parietal lobe e)brainstem 22. The helps to govern motivated behaviors like sex & aggression, and to regulate hormonal systems involved in hunger and thirst. A)basal ganglia b)hippocampus c)hypothalamus d)thalamus e)medulla was stimulated. A)left somatosensory cortex b)right somatosensory cortex c)left motor cortex d)right motor cortex ejautonomic nervous system 23. If a neurosurgeon stimulates your brain and your left finger twitches, it is likely the are fluid-filled spaces in the is a protective coverage for the brain, whil brain. a)myelin, gyrus b)meninges, ventricles c)myelin, vesicles d)nucleotides chromosomes e)none of the above

Explanation / Answer

10. B) a blood brain barrier

The blood brain barrier is one the selective barriers of the semi permeable membrane, that would be separating the blood that is circulating in the brain from the extracellular fluid that is circulating in the extracellular fluid of the CNS. This would be formed through the extracellular cells and would be allowing passage of the molecules that are lipid soluble along with the passage of the gases and water.

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