The type of membrane that prevents desiccation, provides lubrication, and traps bacteria and foreign particles is
A. synovial.
B. mucous.
C. cutaneous.
D. serous.
E. cartilaginous.
Answer: B
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The hormone ANP causes systemic blood vessels to
A. constrict, which raises blood pressure. B. constrict, which lowers blood pressure. C. dilate, which raises blood pressure. D. dilate, which lowers blood pressure.
What is the primary form in which CO2 is transported in the blood?
a. physically dissolved b. bound to hemoglobin c. bound to plasma protein d. as bicarbonate e. as carbonic anhydrase
The thermoneutral zone is
a. maintained by sweating and shivering mechanisms b. the temperature within the body core that remains constant despite changes in environmental temperature c. the environmental temperature range within which core temperature can be kept constant by skin vasomotor responses without calling supplementary heat-production or heat-loss mechanisms into play d. the controlled environment within a building equipped with both heating and air-conditioning e. the environmental temperature identical to core temperature so that body temperature is held constant without any physiological compensatory mechanisms being instituted
In a feedback loop, the integrating center sends information to the ________.
sensor effector brain region thermostat