What is a blastocyst?
a. The 5-day-old zygote that becomes implanted in the uterine wall
b. The terminal end of the umbilical cord that attaches to the placenta
c. Fingerlike projections on the uterine wall that act to separate fetal from maternal tissues
d. The network of placental blood vessels that exchanges nutrients and waste products from mother to fetus
e. The structure that develops in place of the brain in an anencephalic infant
ANS: A
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The type of metabolic reaction that synthesizes new body substances is called:
a. anabolism. b. catabolism. c. homeostasis. d. metabolism.
A study reported a 10% morbidity rate in infants in the country and a 12% morbidity rate for infants in the city. This means that:
a. 10% of infants died in the country b. more infants died in the city than in the country c. more disease in infants in the city than in the countiy d. more disease in infants in the countiy than in the city
Insulin is able to reduce blood glucose levels because it
A. promotes the uptake of glucose from the blood by muscle and adipose tissue. B. promotes the storage of glucose as glycogen in the muscle and liver. C. interacts with the insulin receptors of certain cells. D. All of the above
Plasmapheresis may be used to treat which of the following conditions?
a. ALS and GB b. GB and myasthenia gravis c. Myasthenia gravis and MS d. ALS and MS