Using Figure 22.3, match the following:
1) Produces enzymes that break down all categories of foodstuffs.
2) Increases surface area for absorption via villi and microvilli.
3) Bacteria process undigested chyme from the small intestine.
4) Only digestive structure with three muscle layers.
5) Receives blood via the hepatic portal system.
6) Contains the brush border enzymes that complete digestion of carbohydrates and proteins.
7) Main function is to filter and process the nutrient-rich blood delivered to it.
8) Produces intrinsic factor.
9) Produces a mucoid barrier.
1) D
2) B
3) E
4) C
5) A
6) B
7) A
8) C
9) C
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How is it possible to remove a section of lung without damaging neighboring sections?
A. The bronchopulmonary segments are separated from each other by connective tissue septa. B. Surgeons cauterize any freshly cut portion of the lung to seal it. C. Lungs are actually comprised of multiple separate structures each served by its own bronchus. D. It isn't possible to perform this type of surgery on the lungs.
Secretion of potassium into the urine is
A) decreased by aldosterone. B) associated with the secretion of sodium from the distal tubules and collecting ducts. C) increased when the exchange pump binds H+. D) increased by aldosterone. E) None of the answers is correct.
In certain epithelial cells, the plasma membrane has a scalloped contour and contains many rigid membranous plaques. In which type of epithelium can such cells be found?
a. Simple cuboidal epithelium b. Simple columnar epithelium c. Simple squamous epithelium d. Stratified squamous epithelium e. Transitional epithelium