If a second stimulus arrives before the relaxation phase has ended, a second, more powerful contraction occurs. This is called
A) incomplete tetanus
B) complete tetanus
C) recruitment
D) treppe
E) wave summation
E) wave summation
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Which of the following is not a contribution of the reproductive system to the body systems?
a) Stimulation of growth and maintenance of bones of the skeletal system b) Lowering blood cholesterol level in males under the age of 50 c) Increasing the rate and depth of breathing during sexual arousal d) Stimulating the growth of skeletal muscles in males e) Exert feedback effects on the hypothalamus and anterior pituitary gland
Cells normally regulate the rate of an enzymatic reaction by
A) allowing all metabolic enzymes to be found throughout the cytoplasm. B) raising their temperature to 110° F. C) increasing reaction rate as the concentration of product increases. D) changing the concentration of an enzyme.
As stress levels rise in animals, activity levels of the sympathetic nervous system ________________________________________
Fill in the blank(s) with correct word
Which of the following is not a characteristic of a nonsteroid hormone?
a. Attaches to a receptor on the cell membrane b. Causes protein synthesis to occur c. Can use cAMP as a second messenger d. All of the above are characteristics of a nonsteroid hormone