Which of the following structures secrete mucus?
a. salivary glands
b. esophagus
c. stomach
d. colon
e. All of the above
E
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Fick's law of diffusion states that the rate of diffusion across a membrane is
A) proportional to surface area and membrane thickness, but inversely proportional to concentration gradient. B) proportional to membrane permeability, but inversely proportional to concentration gradient and surface area. C) proportional to concentration gradient, surface area, and membrane permeability. D) proportional to membrane thickness and surface area.
Axons end by branching to form small extensions with enlarged ends. The enlarged ends are called
A) dendrites. B) neuron cell bodies. C) presynaptic terminals. D) postsynaptic membranes. E) axon hillocks.
Phosphorylation of glucose "traps" the glucose within a cell.
Answer the following statement true (T) or false (F)
The terms "crypts of Lieberkuhn" and "intestinal glands" refer to the same structures. Which one, if either, is an eponym?
A. Intestinal glands B. Crypts of Lieberkuhn C. Both intestinal glands and Crypts of Lieberkuhn are eponyms D. Neither intestinal glands nor Crypts of Lieberkuhn are eponyms