Nokea
Which of the following statements best describes the migrating motor complex (MMC)?
- A. It is responsible for the peristaltic movement of food along the entire gastrointestinal tract
- B. It is a cyclic pattern of motility that primarily occurs during the postprandial (after-meal) period
- C. It involves segmental contractions that aid in the mixing and breakdown of food particles
- D. It occurs during fasting and clears residual contents from the stomach and small intestine
Correct Answer: D
Rationale: The MMC is a fasting-state motility pattern that clears residual contents, regulated by motilin, not active postprandially.
You may also like to solve these questions
Chymotrypsin is-
- A. Proteolytic enzyme
- B. Fat digestive enzyme
- C. Vitamin
- D. Hormone
Correct Answer: A
Rationale: Chymotrypsin is a proteolytic enzyme secreted by the pancreas.
The hardest constituent of the tooth is-
- A. Enamel
- B. Dentine
- C. Bone
- D. Pulp
Correct Answer: A
Rationale: Enamel is the hardest substance in the human body, protecting the tooth's inner layers.
Where are the osmoreceptors located?
- A. Kidney
- B. Hypothalamus
- C. Pituitary
- D. Liver
Correct Answer: B
Rationale: Osmoreceptors in the hypothalamus detect blood osmolarity changes.
Hyperthermic means:
- A. Too cold
- B. Normal
- C. Too hot
- D. Stable
Correct Answer: C
Rationale: Hyperthermic refers to an abnormally high body temperature.
In congenital megacolon or Chagas' disease the following is affected:
- A. Muscularis mucosa.
- B. Intestinal lining epithelium
- C. Nerve plexuses of GIT resulting in disturbances in digestive tract motility with dilatation in some areas.
- D. Mucosal glands.
Correct Answer: C
Rationale: Both conditions affect the enteric nerve plexuses (e.g., Auerbach's and Meissner's), leading to motility issues like dilatation.