All of the following are structures of the cardiovascular system, except
A) the heart.
B) arteries.
C) the spleen.
D) veins.
E) capillaries.
Answer: C
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The respiratory center gathers information from a variety of sources in order to set the rate and depth of breathing. This is an example of what type of neural circuit?
A. Convergent B. Divergent C. Reverberating D. Parallel after-discharge
Which of the following activities occurs in the presence of light within the phototransduction pathway?
a. Ganglion cells stimulate bipolar cells. b. cGMP levels increase within photoreceptors. c. Bipolar cells produce graded potentials. d. Sodium channels open in photoreceptors. e. None of the above.
The following guidelines will protect you from chemical hazards EXCEPT which statement?
A) Always use a spoon or spatula to take a dry chemical from a large storage container. B) Most chemicals are safe to handle with bare hands. C) Do not return unused portions of chemicals to their original containers. D) When mixing solutions always add a chemical to water; never add water to the chemical.
A stabbing victim sustained a perforation to his large intestine. From the outermost layer to the innermost layer, what is the order in which the knife penetrated his intestine?
A) serosa, muscularis externa, submucosa, mucosa B) serosa, submucosa, muscularis externa, mucosa C) mucosa, submucosa, muscularis externa, serosa D) submucosa, muscularis externa, serosa, mucosa E) mucosa, muscularis external, submucosa, serosa