Nokea
Which part of the nervous system controls the digestive system?
- A. Somatic
- B. Digestic
- C. Autonomic
- D. Central Nervous system
Correct Answer: C
Rationale: The autonomic nervous system regulates involuntary digestive processes like peristalsis and secretion.
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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.
Crypts of Lieberkuhn are found in between the villi. They secrete :
- A. Glucagon
- B. Succus entericus
- C. Insulin
- D. Gastric juice
Correct Answer: B
Rationale: Crypts of Lieberkuhn secrete succus entericus for intestinal digestion.
Where in the nephron is most of the glucose reabsorbed back into the blood?
- A. Proximal convoluted tubule
- B. Distal convoluted tubule
- C. Loop of Henle
- D. Henley upon Thames
Correct Answer: A
Rationale: Most glucose is reabsorbed in the proximal convoluted tubule via active transport.
Taste buds are found on the following papilla EXCEPT:
- A. Circumvallate papilla
- B. Filiform
- C. Fungiform
- D. Foliate
Correct Answer: B
Rationale: Filiform papillae lack taste buds and are primarily involved in touch sensation, unlike the other papillae types.
Which of the following would MOST directly affect the operations of the digestive system?
- A. osteoporosis
- B. liver damage
- C. heart attack
- D. kidney failure
Correct Answer: B
Rationale: Liver damage directly impacts digestion by reducing bile production, essential for fat breakdown.