In the kidneys, parathyroid hormone acts to ________ production of calcitriol and to ________ excretion of calcium in urine
A.
increase; increase
B.
increase; decrease
C.
decrease; decrease
D.
decrease; increase
B
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Gustatory receptors are classified as mechanoreceptors because food molecules must be dissolved in saliva before they can be tasted
Indicate whether this statement is true or false.
Which of the following is an evolutionary hypothesis to explain morning sickness?
A. It alerts the woman that she is pregnant so that she is careful not to expose herself to harmful substances. B. It is a natural form of birth control. C. It is an adaptation to protect the embryo from toxins. D. It prevents too much weight gain during pregnancy. E. It is a vestigial artifact left over from early mammalian ancestors.
A sample of tissue from an injury shows a large number of basophils. This would indicate that the tissue was ________.
A) abscessed. B) being rejected. C) inflamed. D) infected by viruses. E) infected by multicellular parasites.
Compared to skeletal muscle, smooth muscle
A) contracts more rapidly and relaxes more rapidly. B) contracts more slowly and relaxes more slowly. C) contracts more slowly and relaxes more rapidly. D) contracts more rapidly and relaxes more slowly.