1. The central nervous system contains the brain and the A. spinal nerves B. gan
ID: 3515895 • Letter: 1
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1. The central nervous system contains the brain and the A. spinal nerves B. ganglia C. spinal cord D. motor nerves -E, all of the above are true 2. Afferent nerves conduct nerve impulses from A. the central nervous system (CNS) - B. effectors to the CNS C. receptors to the CNS D. the CNS to receptors E. one effector to another effector 3. When considering the sensory homunculus, which areas of the body have the most somatosensory receptors in the cortex? A) Feet/hands B) Arms/legs C) Face/Hands D) Hands/Genitals E) Visceral Organs/Hands. 4. The white matter of the spinal cord is dominated by A) unmyelinated axons B) cell bodies of neurons, neuroglia, and unmyelinated axons C) Schwann cells and satellite cells D) myelinated axons E) none of the above 5. The blood-brain barrier (BBB) is MOST permeable to A) platelets, white blood cells and red blood cells. B) sodium, potassium and chloride. C) antibiotics. D) glucose and oxygen. - 6. Name the connective tissues coving the brain from superficial to deep. A. pia mater/arachnoid mater/dura mater B. arachnoid mater/dura mater/pia mater C. dura mater/pia mater/arachnoid mater D. pia mater/arachnoid mater/dura E. dura mater/arachnoid mater/pia mater 7. Cerebrospinal fluid serves all of these purposes EXCEPT A) to regulate the chemical environment of the nervous tissue. B) to allow the peripheral blood stream to freely mix with the CNS C) to provide the main source of oxygen and nutrients to the nervous tissue. D) to protect the brain from striking the cranium when jolted. E) to reduce absolute weight of the brain within the cranium.Explanation / Answer
1. C) Spinal cord
2. C) Receptors to CNS
3. B.)Arms/legs
4. D )Myelinated axon
5. D). Glucose and oxygen
6. E) Dua mater/ arachnoid mater/Pia mater
7. B) To allow the pripheral blood stream to freely mix with CNS
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