The velocity and pressure of blood is slowest and lowest in the capillary beds. Which of the following is not an accurate description of the benefits of slow, low pressure blood in the capillary beds?
A) Lower pressure on the venus end of the capillary bed allows for greater reabsorption of fluid back to the plasma.
B) Slower blood flow through capillaries allows more time for diffusion to take place in the capillary bed.
C) Lower pressure in the capillary bed helps to increase pressure in the venus circulation.
D) Lower pressure reduces the chance of injury to delicate capillary vessels.
C
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If the thoracic duct were tied off, which of the following classes of nutrients would not enter the circulatory system at their normal rate?
A. Lipids B. Disaccharides C. Glucose D. Amino acids E. Monosaccharides
Which of the following is an example of a free macrophage?
a. Kupffer cell b. microglial cell c. alveolar macrophage d. all of the listed responses are correct
The movement of glucose across a plasma membrane is achieved by
A. receptor-mediated exocytosis. B. facilitated diffusion. C. osmosis. D. phagocytosis. E. ion pumps.
Which organ system supports the body and protects internal organs?
A) endocrine system B) skeletal system C) digestive system D) muscular system