"Rest and digest," as well as the maintenance of homeostasis, is associated with the action of the _________ division of the ANS
Fill in the blank with correct word.
parasympathetic
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The feature of the eye that converts light rays to nerve impulses is the
A. pigmented layer of the retina. B. sclera. C. conjunctiva. D. cornea. E. neural layer of the retina.
Regulation of the amounts of water, sodium ions, and potassium ions lost in the urine occurs between the nephron loop and the
A) collecting system. B) distal convoluted tubule. C) renal corpuscle. D) proximal convoluted tubule. E) Bowman's capsule.
Intrinsic factor is
a. secreted by the parietal cells in the stomach b. necessary for absorption of vitamin B12 c. abundant in pernicious anemia d. both a and b e. both b and c
Which valve prevents the backflow of blood into the left ventricle when the ventricles relax?
A. Right atrioventricular valve B. Aortic semilunar valve C. Left atrioventricular valve D. Pulmonary semilunar valve E. None of the choices is correct.