D. Afferent and Efferent 18. Gray matter in the brain and spinal cord consists p

Question

D. Afferent and Efferent 18. Gray matter in the brain and spinal cord consists primarily of C. Neuroglia D. Axons A. Nerve fibers B. Cell Bodies. 19. Which lobe of the cerebral cortex is not important in memory function? D. Temporal A. Frontal. B. Occipital C.Parietal. 20. A 26yo male is brought into the emergency room after being ejected from his motorcycle after failing wheel in the air). to preform a wheelie. (Balancing the motorcycle on the rear wheel with front EMS states he did not lose conciseness, but was not wearing his helmet at the time of the incident. During his recovery; the ER staff notices that he has a severe difficulty controlling his skeletal muscles, maintaining his balance, and coordinating movements. What part of the nervous system was most likely damaged during the accident? A. Cerebral cortex B. Cerebellum C. Myelin sheath of the peripheral neurons D. Thalamus For questions 21-25, Please use the following image below to best answer each question or statement Action Potential: Membrane Voltage vs. Time 70 0 1 Time (msec) 21. Hyperpolarization; Voltage-gated K+ Channel remains slightly open after potential reaches resting level 22. Depolarization; Opening of the Voltage-gated Na+ Channels 23. Repolarization; Closure of Na+& Opening of K+ Voltage-gated Channels 24. Resting Membrane Potential (RMP) 25. Threshold Level

Explanation / Answer

18. The answer is B. Cell Bodies
19. The answre is A. Frontal.

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