During platelet plug formation, platelets release ________ and endothelial cells release ________, which lead to vasoconstriction.
A. thromboxane; endothelin
B. endothelin; thromboxane
C. histamine; heparin
D. erythropoietin; thromboxane
E. thromboxane; histamine
Answer: A
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Any autonomic neuron that conducts impulses out of the CNS will transmit those impulses to a postganglionic neuron
Indicate whether the statement is true or false
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Generally, people have ________ number of melanocytes ______________
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