The spinal cord is part of the ________ nervous system
A) peripheral
B) somatic
C) central
D) autonomic
E) afferent
C
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Which condition is caused by chronic hyperglycemia?
A. Kidney stones B. Polycystic kidney disease C. Ischemic nephropathy D. Diabetic nephropathy
Which of these is NOT a muscle that can flex the knee?
a. biceps femoris b. vastus medialis c. gastrocnemius d. gracilis e. sartorius
Which of the following does not influence the time necessary for a nerve impulse to be transmitted?
A) length of the axon B) presence or absence of a myelin sheath C) diameter of the axon D) presence or absence of nodes E) whether or not the impulse begins in the CNS
Cocaine lowers the levels of a chemical messenger in the brain called enkephalin. Researchers have found the number of enkephalin receptors to be higher in cocaine addicts than nonaddicted people. This is an example of
A. saturation. B. up-regulation. C. antagonism. D. affinity. E. down-regulation.