Gallstones may form if
A. hepatic cells secrete too much HCl.
B. bile is too concentrated.
C. the pH of the gallbladder becomes too alkaline.
D. the liver is lacerated.
Answer: B
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The thin extracellular layer, consisting of the basal and reticular lamina, that anchors epithelial cells to underlying connective tissue is called the
a) basement membrane. b) tunica adventitia. c) tight junction. d) adherens junctions. e) gap junctions.
What is the function of the inferior colliculi?
A. Control of pain awareness B. Visual tracking of moving objects C. Auditory reflexes, such as a startle response to a loud noise D. Regulation of rate and force of the heartbeat E. Improvement of motor function by suppression of unwanted contractions
Complement proteins
A. are hormones found in the blood. B. do not attract neutrophils, monocytes, macrophages, or eosinophils. C. are on the surface of macrophages. D. can form holes in the plasma membrane of target cells. E. may cause the release of interferon.
The mitochondrion is the site of
A. glycolysis. B. the citric acid cycle. C. anaerobic respiration. D. lactic acid formation. E. the citric acid cycle and the electron-transport chain.