Which occurs during the secretion of hydrochloric acid by gastric epithelial cells?
A. There is a decrease in the pH of blood in the hepatic portal circulation.
B. Bicarbonate ions are secreted into the hepatic portal circulation.
C. Chloride ions are pumped from the cytosol of the gastric epithelial cells into the hepatic portal circulation blood.
D. Both H+ and K+ are actively pumped from the epithelial cell cytosol into the lumen of the stomach.
E. Vesicles containing H+/K+ -ATP-ase proteins are endocytosed into vesicles within the gastric epithelial cells.
B
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DNA molecules are in the nucleus
A. complexed with protein, forming chromatin fibers. B. complexed with protein, forming nucleoli. C. complexed with protein on the nuclear envelope. D. as free molecules.
During the period of ____________________ and the period of ____________________ in the cardiac cycle, all heart valves are closed
Fill in the blank(s) with correct word
The limbic system of the brain is involved in
a. the control of movements involving the extremities, such as arm gestures. b. the control of innate behaviors. c. the response to hunger. d. the response to fatigue. e. none of these.
The ____ nervous system consists of the brain and spinal cord
a. peripheral b. central c. autonomic d. somatic