Which statement describes the muscular contractions of the GI tract??
A) ?Peristalsis begins in the stomach upon the initiation of the swallowing reflex.
B) ?To withstand the pressure of stool evacuation, the colon must have the thickest and strongest muscles of the GI tract.
C) ?The jejunum has a third layer of diagonal muscles to enhance contraction and relaxation phases for optimal digestion.
D) ?The periodic contractions of intestinal muscles mix the chyme before allowing the contents to move toward the colon.
D
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Gallstones can interfere with the normal flow of bile and can cause a great deal of pain. Removing the gallbladder is one method to treat gallstones. What potential problem might arise if the gallbladder is removed?
A. Absorption of fat-soluble nutrients could be impaired. B. Absorption of water-soluble nutrients could be impaired. C. Release of pancreatic secretions into the duodenum could be impaired. D. The duodenum could be damaged.
The diet of a woman who is lactating requires:
A) additional calories to support milk production. B) four times more folate and iron than what was consumed during pregnancy. C) fewer calories during the second six months than during the first six months of the baby's life. D) less amount of water so that the milk produced is not too dilute.
Which of the following reduces blood pressure by reducing blood volume?
a. Diuretics b. ACE inhibitors c. Beta-blockers d. Calcium channel blockers
The term hard-boiled eggs is incorrect because the contents of the egg actually coagulate long before the boiling point is reached.
Answer the following statement true (T) or false (F)