When the concentration of water in body fluids increases, the secretion of ADH increases.
Answer the following statement true (T) or false (F)
False
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Which of the following muscles flexes the knee?
A. Rectus femoris B. Soleus C. Gluteus maximus D. Semimembranosus E. Iliopsoas
Antibodies
A. play a large role in cell-mediated immunity. B. are produced by both T and B cells. C. have a variable region that binds to a specific antigenic determinant. D. are not specific, but act generally. E. are composed of four light and four heavy polypeptide chains.
Which of the following factors would produce the greatest change in blood flow?
a. Doubling the radius of the vessel b. Doubling the difference in the pressure gradient within the vessel c. Doubling the viscosity of the blood d. Doubling the length of the vessel e. Halving the viscosity of the blood
If cardiac muscle cells are unable to repolarize, this would cause
A. cardiac output to increase. B. no harm. These cells can spontaneously depolarize anyway. C. the heart rate to decrease. It might cause cardiac arrest. D. an increased demand on mitochondria to produce more ATP. E. tachycardia.