The __________ is the largest component of the central nervous system and contains billions of neurons that serve a variety of functions.
A) brain
B) medulla
C) cerebellum
D) spinal cord
Answer: A) brain
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Vaccination stimulates ________ immunity
A) artificial active B) nonspecific C) natural active D) natural passive E) artificial passive
__________ pass(es) from the maternal blood to the fetal blood. Fetal __________ pass(es) the other way.
A. Carbon dioxide and oxygen; wastes B. Carbon dioxide; nutrients C. Wastes; nutrients and oxygen D. Wastes and nutrients; oxygen and carbon dioxide E. Oxygen and nutrients; wastes
Vasopressin
a. can completely halt urine production during periods of water deprivation to conserve water for the body. b. activates the cyclic AMP second-messenger system within the tubular cells. c. renders the distal and collecting tubules impermeable to water. d. increases Na+ reabsorption by the distal portions of the nephron. e. stimulates the active salt pump of the ascending limb of the loop of Henle to establish the medullary vertical osmotic gradient.
What is a carbohydrate-digesting enzyme?
A) elastase B) pancreatic lipase C) trypsin D) amylase