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67) Match the following

62) Which statement about CO2 is incorrect? A) Its concentration in the bloodstream is reduced by hyperventilation. B) Its accumulation in the bloodstream is associated with a decrease in pH (acidosis). C) CO2 dissolves in the blood plasma and then is routed through the RBCs to form bicarbonate ion (HCO3-). D) CO2 concentrations are always greater in venous blood than in arterial blood.  

14) The testicular cells that construct the blood-testis barrier that prevents membrane-bound antigens from escaping into the bloodstream are the ________. A) spermatocytes B) spermatogonia C) sustentacular cells D) interstitial cells  

Match the following:   A) Dehydration B) Edema C) Hyponatremia D) Aldosterone E) Addison’s disease

13) A low secretion of luteinizing hormone (LH) in the normal male adult would cause ________. A) decreased testosterone secretion B) excessive beard growth C) increased spermatogenesis D) shrinkage of the anterior pituitary gland  

45) Recessive alleles are best defined as ________. A) a deleterious or disease-causing allele B) a weakened or attenuated allele C) an allele only expressed when the allele is homozygous D) the least frequently expressed allele in a given population  

Match the following:   A) Site of aldosterone action. B) Blood supply containing substances too large to be filtered. C) Blood vessel in between capillary plexuses of the portal system. D) Site where filtrate is first formed.

Match the following:   A) Radiation B) Evaporation C) Convection D) Conduction

Match the following:   A) Ketogenesis B) Lipogenesis C) Lipolysis D) Beta oxidation

72) The primary reason elderly people should decrease their caloric intake is that ________. A) muscle mass and metabolism decline with age B) their appetite begins to diminish C) they have a higher metabolic rate and do not need large amounts of food D) they spend most of the day at rest, and their food will quickly turn to fat