Smooth muscle cells are interconnected by gap junctions found in intercalated discs that join cells together
a. True
b. False
Indicate whether the statement is true or false
False
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Suppose you cut your finger only slightly in what is known as a "paper cut." You observe that the cut hurts but it doesn't bleed. How would you interpret your observation?
A. Nerve endings occur in epithelium but blood vessels do not. B. The paper severed the skin, missing blood vessels, but hitting nerve endings. C. Very thin cuts never draw blood but do sever nerves. D. You probably have some unknown condition related to blood clotting. E. The paper had some factor that prevented the release of blood but not the sensation of pain.
Strong emotions and pain, acting through the limbic system and hypothalamus, send signals to the respiratory centers that modulate respiratory rate and depth
Indicate whether the statement is true or false
The __________ ligament is a sheet of mesentery that attaches the liver to the anterior abdominal wall.
Fill in the blank(s) with the appropriate word(s).
Which germ layer is the cardiovascular system derived from?
A. ectoderm B. mesoderm C. endoderm