In order to regulate calcium in the blood, what does vitamin D facilitate?
a. Increased absorption of calcium by the small intestine and decreased uptake of calcium by the liver
b. Uptake of phosphorous by the liver and increased excretion of calcium by the kidneys
c. Decreased absorption of calcium by the stomach and increased storage of calcium by bones
d. Release of calcium from bones and decreased excretion of calcium by the kidneys
d
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________ is the production of milk by cells that line the mammary alveoli in breast tissue.
A. Breastfeeding B. Pregnancy C. Lactation D. Let-down reflex
Which of the following is a difference between prolactin and oxytocin?
A) Prolactin stimulates the synthesis of milk, whereas oxytocin causes the muscles around the alveoli to contract. B) Prolactin is released by the pituitary gland, whereas oxytocin is released by the thyroid gland. C) Prolactin is released by the pituitary gland only during periods of anxiety, stress, and fatigue, whereas oxytocin is released only during low-stress and low-anxiety periods. D) Prolactin is a hormone that reduces the number of milk-producing cells in the alveoli, whereas oxytocin increases the number of milk-producing cells in the alveoli.
Which of the following strains of hepatitis virus is the most common cause of acute viral hepatitis?
a. Hepatitis A virus b. Hepatitis B virus c. Hepatitis C virus d. Hepatitis D virus
Which of the following are the two types of cytokines used to treat patients with cancer?
A. chemokines and lymphokines B. interferons and interleukins C. monokines and interleukins D. interferons and lymphokines E. chemokines and monokines