Nokea
is the instant source of energy.
- A. Glucose
- B. Fructose
- C. Galactose
- D. Maltose
Correct Answer: A
Rationale: Glucose is the body's primary and most immediate source of energy.
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Exocrine portion of pancreas show the following EXCEPT:
- A. Formed of pure serous acini with centroacinar cells
- B. Its duct system is rich in striated ducts
- C. Secretion of bicarbonate is stimulated by secretin hormone.
- D. Secretion of enzymes is stimulated by cholecystokinin
Correct Answer: B
Rationale: The pancreatic duct system has intercalated ducts, not striated ducts, which are characteristic of salivary glands.
Which of the following is not a function of saliva?
- A. to initiate protein digestion
- B. to aid in cleansing the teeth
- C. to lubricate the pharynx
- D. to assist in formation of the bolus
Correct Answer: A
Rationale: Saliva contains amylase for carbohydrate digestion, but it does not initiate protein digestion.
A digestive enzyme, salivary amylase, in the saliva begin digestion of-
- A. Carbohydrates
- B. Protein
- C. Fats
- D. Nucleic acids
Correct Answer: A
Rationale: Salivary amylase (ptyalin) in saliva begins the digestion of carbohydrates by breaking down starches into simpler sugars like maltose.
Which part of the digestion process speeds up the break down of food?
- A. enzymes
- B. peristalsis
- C. villi
- D. bile
Correct Answer: A
Rationale: Enzymes are biological catalysts that accelerate the chemical breakdown of food.
Substances which are not related with hepatic portal circulation :-
- A. Amino acid
- B. Fatty acid
- C. Glucose
- D. Electrolytes
Correct Answer: B
Rationale: Fatty acids are absorbed into lacteals and enter the lymphatic system, not the hepatic portal vein.