Nokea
Ito cells, all true except:
- A. Hepatic stellate cells that store vitamin A.
- B. Liver cirrhosis, these cells may differentiate into myofibroblasts to synthesize collagen & induce fibrosis.
- C. One of the contents of the perisinusoidal space
- D. They are highly phagocytic cells
Correct Answer: D
Rationale: Ito (stellate) cells store vitamin A and contribute to fibrosis, but Kupffer cells, not Ito cells, are phagocytic.
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Food and chyme are pushed through the digestive system by:
- A. ingestion
- B. mastication
- C. assimilation
- D. peristalsis
Correct Answer: D
Rationale: Peristalsis refers to the rhythmic contractions of smooth muscle that propel food and chyme through the digestive tract.
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.
Duodenum has characteristic Brunner's glands which secrete -
- A. Estrogen
- B. Prolactin, parathormone
- C. Estradiol, progesterone
- D. Alkaline secretion
Correct Answer: D
Rationale: Brunner's glands secrete an alkaline mucus to neutralize acidic chyme from the stomach.
Besides carbohydrates, proteins, fats, vitamins and minerals, what other nutrient does your body need for life?
- A. DNA
- B. chlorophyll
- C. water
- D. none of the above
Correct Answer: C
Rationale: Water is an essential nutrient required for all bodily functions.
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.