Signals from the parasympathetic nervous system
cause which of the following?
a. increase in blood pressure
b. increase in pulse rate
c. increase in digestive activities
d. increase in blood sugar level
e. increase in metabolic rate
Answer: c
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Which of the following is not a required characteristic of antigens from microbial pathogens that might be used in vaccine production?
A. It must be essential for the survival of the pathogen in the host. B. It must be excreted or found on the surface of the pathogen. C. It must be found in all strains of the pathogen. D. All of the choices are correct.
People who fight forest fires for a living might have trouble blowing out the candles on their birthday cake because their ________ is reduced
A) tidal volume B) expiratory reserve volume C) residual volume D) vision
The fur standing up along a dog's back when it confronts a strange dog is an example of visual communication
Indicate whether the statement is true or false
Helper T-cells
A. suppress immune reactions. B. directly destroy target cells. C. activate B-cells and other T-cells. D. secrete antibodies. E. function in allergic reactions.