Plasmin
a. breaks down fibrin in a clot
b. inhibits red blood cell production
c. is a cofactor in blood clotting
d. stimulates fibrin production
e. performs functions a and b
A
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The sensory (afferent) division of the peripheral nervous system
A. does not involve sensory receptors. B. transmits action potentials to sensory organs. C. stimulates muscle contractions. D. stimulates glands to release hormones. E. conveys action potentials to the CNS.
Which of the following would disqualify a chemical messenger from being considered a paracrine signal?
a. It is an organic molecule. b. It is not transported in the blood. c. It affects the cell that released it. d. Once released, it is distributed to its target(s) by simple diffusion. e. It is released as a specific response to a signal.
Red blood cells, found in lymphatic vessels and organs, help defend the body against disease.
Answer the following statement true (T) or false (F)
Chemoreceptors are located in all of the following except
A) carotid bodies. B) aortic bodies. C) the skin. D) the organs of taste. E) the organs of smell.