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Doctors Medicines MCQs Q&A

  1. Large intestines
  2. Stomach
  3. Gall bladder
  4. Small intestines
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1 Answers

Option 4 : Small intestines

The correct answer is Small Intestines.

  • The Small Intestine of the digestive system receives secretions from the liver and the pancreas.
  • The Small Intestine:
    • It is highly coiled and is about 6-8 meters long. It receives secretions from the liver and the pancreas.
    • The digested food can now pass into the blood vessels in the wall of the intestine. This process is called absorption.
    • The inner walls of the small intestine have thousands of finger-like outgrowths.
    • These are called villi. (It increases the surface area of absorption of the digested food).
    • The small intestine receives bile juice and stores it in the gall bladder.


  • Large intestine:
    • It is wider and shorter than the small intestine.
    • It is about 1.5 meters in length.
    • Its function is to absorb water and some salts from the undigested food material.
  • Gallbladder:
    • The gallbladder is a pear-shaped organ under the liver.
    • It stores bile, a fluid made by the liver to digest fat.
    • It breaks down fats into fatty acids, which can be taken into the body by the digestive tract.
  • The stomach:
    • It is a muscular hollow organ.
    • It takes in food from the oesophagus (gullet or food pipe), mixes it, breaks it down, and then passes it on to the small intestine in small portions.
    • The stomach stores the food for 4-5 hours.
    • The food mixes thoroughly with the acidic gastric juice of the stomach by the churning movements of its muscular wall and is called the chyme.
    • Gastric juice is made up of digestive enzymes, hydrochloric acid, and other substances that are important for absorbing nutrients - about 3 to 4 litres of gastric juice are produced per day.
    • The hydrochloric acid in the gastric juice breaks down the food and the digestive enzymes split up the proteins.
    • The acidic gastric juice also kills bacteria.
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