Human Anatomy & Physiology II: Practice Exam 1

The short-term controls of blood pressure, mediated by the nervous system and bloodborne chemicals, primarily operate via all but which of the following? a. altering blood volume b. chemoreceptors c. reflex arcs involving baroreceptors d. reflex arcs associated with vasomotor fibers - correct answer altering blood volume If the infundibulum of the pituitary gland is cut, but the cells are kept alive with the blood vessels undamaged, which hormone would no longer be secreted by the pituitary gland? a. luteinizing hormone b. oxytocin c. growth hormone d. adrenocorticotropic hormone - correct answer oxytocin What term describes the situation in which one of the activities of a hormone is to inhibit its own secretion from an endocrine gland? a. auto-regulatory feedback b. negative feedback c. stabilizing regulation d. positive feedback - correct answer negative feedback A person suddenly gaining significant amounts of adipose tissue can expect all of the following physiological changes except one. Which of the following is least likely to occur with a sudden and significant gain in adipose tissue? a. increased risk of developing atherosclerosis b. higher peripheral resistance and higher blood pressure c. lower heart rate and reduced blood flow d. increased angiogenesis and higher peripheral resistance - correct answer lower heart rate and reduced blood flow