Which of the following is a vital function of the skin?
A) The skin converts modified epidermal cholesterol to vitamin D.
B) The skin aids in the transport of materials throughout the body.
C) The cells of the epidermis store glucose as glycogen for energy.
D) The skin absorbs vitamin C so that the skin will not be subject to diseases.
E) The skin aids in desiccation.
A
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Which of the following is NOT true of diffusion in the human body?
A) Net movement of molecules occurs until the osmolarity is equal. B) Diffusion occurs faster at higher temperatures. C) Diffusion is rapid over short distances and slower over longer distances. D) Smaller molecules take longer to diffuse than larger ones.
Urine formed by the nephrons first drains into these
a) H b) I c) J d) K e) L
Cardiovascular changes resulting from moderate exercise include ________.
A. increased visceral blood flow B. increased total peripheral resistance C. increased blood flow to the skin D. decreased stroke volume
The ________ adjusts the shape of the lens to keep objects in focus.
Fill in the blank(s) with the appropriate word(s).