Which of the following is an effect of stress on the immune system?
a) Increased activity of T lymphocytes
b) Increased activity of B lymphocytes
c) Activation of the immune system
d) Inhibition of the immune system
e) Increased production of antibodies
d
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The cardiac center of the brainstem includes the
A. cardioacceleratory center, from which parasympathetic pathways extend. B. cardioacceleratory center, from which sympathetic pathways extend. C. vasomotor center, from which parasympathetic pathways extend. D. cardioinhibitory center, from which sympathetic pathways extend. E. All of the choices are correct.
The three types of cones are designated:
A) red, green, and yellow. B) red, yellow, and blue. C) red, green, and blue. D) yellow, red, and blue.
________ is the natural, temporary absence of consciousness from which a person can be aroused by normal stimulation.
Fill in the blank(s) with the appropriate word(s).
Amplification during a second-messenger cascade is beneficial because amplification
A. results in the production of more of the first messenger. B. allows small amounts of hormones to produce large responses in target cells. C. allows a cell to respond to more different hormones. D. takes small molecules and makes polymers out of them.