Label O represents which structure(s)?
A) myenteric plexus
B) artery and vein
C) lymphatic vessel
D) submucosal plexus
E) mucosal glands
C) lymphatic vessel
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This type of membrane lines a body cavity that does NOT open directly to the outside.
a. Cutaneous b. Serous c. Mucous d. Basement e. Connective.
The most rapid conduction of an impulse along an axon occurs on a fiber that is
A) thick and myelinated. B) thin and unmyelinated. C) thick and unmyelinated. D) thin and myelinated.
An endothelium that appears pleated or rippled is characteristic of which of the following?
a. capillaries b. veins c. arteries d. none of the listed responses is correct
A bee sting can trigger a massive release of histamine, which causes ________ and a(n) ________ in arterial blood pressure.
A. vasoconstriction; increase B. vasoconstriction; decrease C. vasodilation; increase D. vasoconstriction; oscillation E. vasodilation; decrease