Nokea
Secretin is a hormone that:
- A. stimulates the release of pancreatic fluid
- B. converts trypsinogen into trypsin
- C. activates chymotrypsin
- D. inhibits the action of pancreatic lipase
Correct Answer: A
Rationale: Secretin stimulates the pancreas to release bicarbonate-rich fluids to neutralize stomach acid.
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Which of the following is absorbed in ileum-
- A. Fat
- B. Bile salts
- C. Vit-K
- D. Glucose
Correct Answer: B
Rationale: Bile salts are reabsorbed in the ileum.
The pancreas makes the following hormones:
- A. Oestrogen and progesterone
- B. Insulin and Glucagon
- C. Testosterone and Oestrogen
- D. Anti Diuretic Hormone and adrenalin
Correct Answer: B
Rationale: The pancreas produces insulin and glucagon to regulate blood sugar.
What waste does the integumentary system remove from the body?
- A. liquid waste
- B. carbon dioxide
- C. salt and water
- D. urea
Correct Answer: C
Rationale: The integumentary system, via sweat glands, removes salt and water through perspiration.
Which statement about chemical digestion in the human alimentary canal is correct?
- A. Digestion of carbohydrates is completed in the colon.
- B. Enzymes are secreted to break down cellulose in the duodenum.
- C. Protein digestion is completed in the ileum.
- D. The stomach secretes enzymes to break down starch.
Correct Answer: C
Rationale: Protein digestion begins in the stomach with pepsin and is completed in the ileum by proteolytic enzymes from the pancreas and intestinal mucosa.
A digestive enzyme, salivary amylase in the saliva begins digestion of-
- A. Starch
- B. Fiber
- C. Proteins
- D. Fats
Correct Answer: A
Rationale: Saliva contains the enzyme amylase that breaks some starches down into maltose and dextrin. Thus, digestion of food occurs within the mouth, even before the food reaches the stomach.