The ideal body-fat percentage is considered to be:
a. 8% to 12% for men and 12% to 15% for women
b. 12% to 18% for men and 25% to 30% for women
c. 12% to 18% for men and 18% to 24% for women
d. 18% to 24% for both men and women
c. 12% to 18% for men and 18% to 24% for women
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What are some nonmedication therapies that can be used in an animal that has a skin condition?
What will be an ideal response?
Myelinated axons conduct impulses much faster because
a. the myelin insulates the axon. b. channels only have to open at the nodes. c. voltage is not lost through along myelinated areas. d. of saltatory conduction. e. all of these answers.
For air to flow into or out of the lungs, there must be
A. a volume gradient established between the atmosphere and the alveoli. B. a temperature gradient between the atmosphere and the alveoli. C. a diffusion gradient between the atmosphere and the alveoli. D. a pressure gradient established between the atmosphere and the alveoli. E. None of the choices are correct.
During exchange at the capillaries, what can cross the endothelial cells, diffusing through the plasma membranes?
A. Proteins B. Large water-soluble substances C. Hormones D. Red blood cells E. Lipid-soluble substances