Receptors that in general do not produce an action potential, but can release neurotransmitters in response to a receptor potential are
A. phasic receptors.
B. primary receptors.
C. secondary receptors.
D. tonic receptors.
C
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The aortic sinus
A. is the first branch off the ascending aorta. B. gives rise to the right and left coronary arteries. C. contains oxygenated blood. D. All of the above
Do you agree with the argument that global climate change will have little impact on biodiversity because montane species can move to higher elevations as temperature increases
and continental species can move northward (or southward for species in the Southern Hemisphere)?
The blood-brain barrier prevents hydrophobic molecules from diffusing into the brain.
Answer the following statement true (T) or false (F)
The anatomic features of the respiratory membrane that make alveolar gas exchange so efficient are
A. its hearty thickness and the presence of oxygen transport pumps. B. the high degree of moisture and the large ratio of volume to surface area. C. its thinness, high water content, and scarcity of capillaries. D. its large surface area and minimal thickness.