Which of the following cells secrete hydrochloric acid?
a) Mucous cells
b) Parietal cells
c) Chief cells
d) Serosa cells
e) Chyme cells
b
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What property do insulators demonstrate that greatly hinders movement of electrical charge?
a. high resistance b. low resistance c. high conductance d. low conductance e. absence of electrons
What is the primary method by which materials such as O2, CO2 and nutrients are exchanged between the blood and surrounding tissues?
a. passive diffusion of substances across the capillary wall down their concentration gradients. b. active transport of materials across the capillary wall. c. osmotic pressure drawing water and solutes out of the capillary, bringing these dissolved nutrients into contact with the tissue cells. d. processes of ultrafiltration and reabsorption. e. bulk flow.
The clumping of foreign cells that occurs when antibodies cross-link their antigens is known as
A. agglutination. B. neutralization. C. precipitation. D. opsonization. E. fixation.
The Golgi tendon organs are examples of which of the following?
A) mechanoreceptors B) proprioceptors C) baroreceptors D) chemoreceptors E) nociceptors