Red blood cells are formed by the process of ________.
Fill in the blank(s) with the appropriate word(s).
erythropoiesis
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Why do signs and symptoms of decreased thyroxine concentration not appear until about a week after a thyroidectomy (surgical removal of the thyroid gland)?
A) About a week's worth of thyroxine is stored in the liver. B) About a week's worth of thyroxine is stored in the anterior pituitary gland. C) Most of the thyroxine is bound to proteins in the bloodstream and the hormones are released gradually. D) The parathyroid glands can take over function of the thyroid gland for a short period of time. E) The anterior pituitary gland can start producing thyroxine.
The membrane potential of most neurons at rest is
A. equal to the equilibrium potential for sodium. B. more positive than the equilibrium potential for sodium. C. more positive than the equilibrium potential for potassium. D. equal to the equilibrium potential for potassium. E. slightly more negative than the equilibrium potential of potassium ion.
One cause of spastic paralysis might be
A. destruction of synaptic vesicles. B. inhibition of acetylcholinesterase. C. inhibition of acetylcholine molecules. D. increase in the amount of acetylcholinesterase. E. blockage of acetylcholine receptors.
The hepatopancreatic ampulla is formed by the union of the
A. pancreatic duct with the lacteals. B. greater duodenal papilla with the lesser duodenal papilla. C. common bile duct and pancreatic duct. D. cystic duct and interlobular duct. E. hepatic ducts and cystic ducts.