What structures of the cardiovascular system are innervated by the sympathetic nervous system, but are NOT by the parasympathetic nervous system?
A) SA node and AV node
B) SA node, AV node, and bundle of His
C) arteriolar smooth muscle
D) arteriolar smooth muscle and venous smooth muscle
E) ventricular myocardium, arteriolar smooth muscle and venous smooth muscle
Answer: E) ventricular myocardium, arteriolar smooth muscle and venous smooth muscle
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A. active transport. B. passive diffusion. C. osmosis. D. facilitated diffusion.
What structure separates the inner and outer layers that form sponges?
a. spicules b. choanocyte c. osculum d. mesohyl
The nicotinic ACh receptor is made up of ___________ subunits.
A) zero B) twenty-seven C) 140 D) five
Organisms in the kingdoms Eubacteria and Archaebacteria were previously grouped in a kingdom called
a. Animalia b. Fungi c. Monera d. Eukarya