[Human Physiology] Gastro-Intestinal Tract – MCQ Questions with Answers

The gastrointestinal (GI) tract, also known as the digestive system, is responsible for the ingestion, digestion, absorption, and elimination of food. It includes organs such as the mouth, esophagus, stomach, small intestine, large intestine, and associated accessory organs (liver, pancreas). The GI tract processes food, breaks it down into nutrients, absorbs them into the bloodstream, and eliminates waste.

Here is the list of questions related to Gastro-Intestinal Tract:

1. The total amount of saliva produced in 24-hour is:

a. 200-400 ml
b. 1200-1500 ml
c. 500-1000 ml
d. 100-200 ml

Correct Answer – (b)

2. Saliva excretes:

a. Thiocyanates
b. Iodide
c. Penicillin
d. All of the above

Correct Answer – (d)

3. pH of gastric juice is:

a. 0.1-1.5
b. 2-4
c. 4-5
d. 5-6

Correct Answer – (a)

4. Total quantity of juices produces by succus entericus in 24 hours is:

a. 2-3 litres
b. 1-2 litres
c. 3-4 litres
d. 5 litres

Correct Answer – (b)

5. The pigments formed by oxidation of biliverdin is, except:

a. Bilicyanin
b. Bilifuscin
c. Biliprasin
d. Choletelin

Correct Answer – (c)

6. Lipase which is tributyrase and acts on butter tributyrin:

a. Intestinal lipase
b. Salivary lipase
c. Gastric lipase
d. Pancreatic lipase

Correct Answer – (c)

7. The movements especially occur in stomach are:

a. Peristaltic waves
b. Systolic contraction of the terminal nature
c. Diminution in size of fundus and body
d. All of the above

Correct Answer – (d)

8. Ludwig pendulum movement is seen in:

a. Oesophagus
b. Stomach
c. Small intestine
d. Ilium

Correct Answer – (c)

9. The movements of large intestine include all, except:

a. Haustral contraction
b. Segmenting contraction
c. Kneading movements
d. Rhythmic segmentation

Correct Answer – (d)

10. The following facts are true about trypsin:

a. Trypsin is protein in nature
b. Trypsin is secreted as inactive trypsinogen
c. It acts on native protein and products of protein digestion
d. All of the above

Correct Answer – (d)

11. The water content of faeces averages around:

a. 35%
b. 25%
c. 65%
d. 4 0%

Correct Answer – (c)

12. Hyper-salivation is seen in all, except:

a. Aptyalism
b. Neoplasm of mouth, stomach, etc.
c. Pregnancy
d. Ulceration of oesophagus and stomach

Correct Answer – (a)

13. The drugs which stimulates the gall bladder are all, except:

a. Adrenaline
c. Histamine
b. Atropine
d. Pitressin

Correct Answer – (d)

14. The hormone which stimulates the movement villi is:

a. Bradykinin
b. Villikinin
c. Gastrin
d. Ptyalin