An action potential is caused by an influx of ________ ions into the cell
A) potassium
B) sodium
C) calcium
D) magnesium
E) both potassium and sodium
B
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A primary function of the skeletal system is
A) maintaining the normal concentrations of calcium and phosphate ions in body fluids. B) absorbing the shock of unexpected rapid body movements. C) facilitating transmission of nerve impulses. D) cushioning abdominal organs such as the kidneys. E) contracting muscles.
Both alpha and beta receptors are stimulated by ________.
Fill in the blank(s) with the appropriate word(s).
In your observations of microscopic slides of cartilage and bone, you can see that chondrocytes and osteocytes are both encased in lacunae.
Answer the following statement true (T) or false (F)
Name the layers of the small intestine from superficial to deep
A) serosa, muscular layer, submucosa, mucosa B) mucosa, submucosa, muscular layer, serosa C) submucosa, mucosa, serosa, muscular layer D) mucosa, submucosa, serosa, muscular layer E) muscular layer, serosa, submucosa, mucosa