Nokea
The hormone involved in the discharge of pancreatic juice in mammal is called-
- A. Gastrin
- B. Secretin
- C. Secretin & CCK
- D. Enterogasterone
Correct Answer: C
Rationale: Both secretin and CCK stimulate pancreatic juice secretion.
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Brunner's gland are found in which of the following layers :
- A. Submucosa of stomach
- B. Mucosa of ileum
- C. Submucosa of duodenum
- D. Mucosa of oesophagus
Correct Answer: C
Rationale: Brunner's glands are located in the submucosa of the duodenum.
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.
When teaching a group of senior citizens about nutrition, the nurse should include information about which of the following age-related changes in gastrointestinal functioning?
- A. Sensory changes that affect taste
- B. Problems with dentition
- C. Reduced gastric juice secretion
- D. Enhanced GI muscle tone
Correct Answer: C
Rationale: Reduced gastric juice secretion is a common age-related change affecting digestion.
The pH in the mouth decreases after eating. Which statement explains the decrease in pH?
- A. Bacteria release acids when respiring food substances.
- B. Enzymes in saliva release acids during digestion.
- C. Food substances become alkaline when chewed.
- D. Salivary glands release an alkaline solution.
Correct Answer: A
Rationale: Bacterial metabolism of food releases acids, lowering the pH in the mouth.
Which of the following describes one function of the stomach?
- A. To introduce carbohydrates to food.
- B. To remove excess water from food.
- C. To temporarily store food.
- D. To absorb nutrients into the bloodstream.
Correct Answer: C
Rationale: The stomach temporarily stores food, mixing it with gastric juices for digestion.