The hair cells for hearing are located in the
a. ampullae
b. eustachian tube
c. scala media
d. utricle
e. vestibule
C
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Which valve prevents the backflow of blood into the left ventricle when the ventricles relax?
A. Aortic semilunar valve B. Right atrioventricular valve C. Left atrioventricular valve D. Pulmonary semilunar valve E. None of these answers is correct.
The main action of antidiuretic hormone is
A) increased water conservation by kidneys. B) to stimulate kidney cells to secrete renin. C) increase urine output to remove excess fluid. D) increased blood pressure by increased Na+ reabsorption. E) inhibition of aldosterone.
Obligatory water reabsorption involves the movement of water along an osmotic gradient
Indicate whether the statement is true or false
The lining of the heart and blood vessels is called ________.
Fill in the blank(s) with the appropriate word(s).