Compounds classified as ______ alter synaptic transmission by changing neurotransmitter receptor numbers or affecting the breakdown and/or removal of neurotransmitter
A.
excitatory neurotransmitters
B.
neurohormones
C.
neuromodulators
D.
inhibitory neurotrasnmitters
C
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The white matter of the cerebellum forms the
A) flocculonodular lobe. B) arbor vitae. C) folia. D) vermis. E) pyramid.
Which of the following statements about the nephron is false?
A) The epithelial cells of the proximal tubule have numerous microvilli. B) The wall of the ascending limb of the loop of Henle is described as "thick" or "thin" depending on the width of the tubule lumen. C) In the distal tubule, the most common epithelial cell type has few microvilli. D) Various regions of the nephron mediate different transport processes.
What effect does an increase in the respiratory rate have on CO2 levels?
A) increases CO2 levels B) decreases CO2 levels C) It will not affect CO2 levels.
The type of muscle found in the walls of hollow organs, such as the stomach, and in the walls of blood vessels is ________
A) cardiac muscle B) skeletal muscle C) smooth muscle D) both smooth muscle and skeletal muscle E) both cardiac muscle and skeletal muscle