Identify three ways the small intestine is modified to increase the surface area for digestion and absorption
What will be an ideal response
The plicae circulares, villi, and microvilli are modifications of the small intestine for digestion and absorption. The plicae circulares are circular folds of the mucosa and submucosa. They force chyme to move spirally through the lumen. The villi are fingerlike projections of the mucosa. They increase the absorptive surface area. Microvilli are projections of the plasma membrane of the absorptive cells of the mucosa that bear intestinal digestive enzymes. They also increase surface area and enhance absorption.
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A. superior. B. lateral. C. caudal. D. inferior. E. cephalic.
If the Broca area is damaged, the result is
A. inability to think of things to say. B. impairment in the movement of the right leg. C. hesitant and distorted speech. D. loss of memory. E. blindness.
Since cartilage must be continuously replaced in the body, appositional and interstitial growth of cartilage continues throughout life.
Answer the following statement true (T) or false (F)
Which of the following terms refers to a hardened and thickened area of skin resulting from persistent pressure and friction?
a) callus b) blister c) wart d) papule e) fever blister