Circular folds and intestinal villi
A) increase the surface area of the mucosa of the small intestine.
B) carry products of digestion that will not pass through the walls of blood capillaries.
C) produce new cells for the mucosa of the small intestine.
D) secrete digestive enzymes.
E) produce hormones.
A
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As a person ages, the teeth wear down from use in a process called dental __________
Fill in the blank with correct word.
Which of the choices below happens during the absorptive state?
A) Anabolic processes exceed catabolic ones. B) Catabolic processes exceed anabolic ones. C) No metabolism occurs. D) Only glucose metabolism occurs.
The vessel that supplies blood to the nephron is called the ________
A) efferent arteriole B) afferent arteriole C) arcuate artery D) cortical radiate artery
The trophoblast is located at the
A. center of the morula. B. center of the blastocyst. C. periphery of the blastocyst. D. center of the embryoblast. E. periphery of the morula.