What is the quickest physiological mechanism for achieving moderate heat loss?
A) Cutaneous vasodilation
B) Diaphoresis
C) Nonshivering thermogenesis
D) Convection
E) Cutaneous vasoconstriction
A
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The actual sites of gas exchange within the lungs are the
A) bronchioles. B) terminal bronchioles. C) spaces between the parietal and visceral pleura. D) blood air barrier of the alveoli. E) interlobular septa.
How does the dorsal blood vessel of the earthworm pump blood?
A) Contractile skeletal muscle surrounding the vessel B) Peristalsis C) Contractile chamber D) It doesn't pump blood. Blood flow is passive.
Substance P is a neuropeptide that functions in the transmission of pain information to the brain
Indicate whether this statement is true or false.
The condition acute respiratory distress syndrome (ARDS) is characterized by damage to the respiratory membrane that causes it to thicken. What effect will this thickening have on the pulmonary gas exchange?
a) It would increase external gas exchange because thickness would increase surface area-to-volume ratio. b) There will be a decrease in internal gas exchange. c) The thickness of the respiratory membrane will decrease the rate at which external gas exchange can occur. d) There would be a decrease in oxygen gas exchange and increase in carbon dioxide gas exchange.