Nokea
The hepatic flexure of the large intestine occurs between the:
- A. transverse colon and descending colon
- B. cecum and ascending colon
- C. ascending colon and transverse colon
- D. descending colon and rectum
Correct Answer: C
Rationale: The hepatic flexure is located between the ascending colon and the transverse colon.
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Amino acids are absorbed in-
- A. Blood capillaries of villi
- B. Wall of rectum
- C. Lacteals and blood capillaries of villi
- D. Lacteals of villi
Correct Answer: A
Rationale: Amino acids are absorbed into the blood capillaries of the villi in the small intestine.
A dysfunction of the parietal cells of gastric glands would result in a decreased production of which two of the following?
- A. mucus
- B. pepsinogen
- C. hydrochloric acid
- D. pepsin
Correct Answer: C
Rationale: Parietal cells secrete hydrochloric acid and intrinsic factor.
During physical examination the nurse notes an absence of bowel sounds. What does this finding indicate about the function of the gastrointestinal tract?
- A. Reduced peristalsis
- B. Normal digestion
- C. Increased motility
- D. Excessive gas
Correct Answer: A
Rationale: Absent bowel sounds suggest reduced or absent peristalsis, possibly indicating ileus or obstruction.
Carboxypeptidase requires _______ for its activity
- A. Copper
- B. Niacin
- C. Iron
- D. Zn
Correct Answer: D
Rationale: Carboxypeptidase is a zinc-dependent enzyme that breaks down proteins into amino acids.
What is an example of assimilation?
- A. absorption of glycerol into lacteals
- B. breakdown of alcohol in the liver
- C. building of proteins from amino acids
- D. release of a hormone from a gland
Correct Answer: C
Rationale: Assimilation involves using absorbed nutrients to synthesize cellular components; building proteins from amino acids is a prime example.