Gastrointestinal | MCQs

Explanation

Pepsin is a type of enzyme.

Correct sentence: Pepsin is an enzyme used in digestion.

پیپسن ایک انزائم ہے جو عمل انہضام میں استعمال ہوتا ہے۔

Explanation

Starch is a type of carbohydrate that is quickly digested by the body.

It is a complex carbohydrate made up of long chains of glucose molecules.

It found in foods such as bread, pasta, and potatoes.

Explanation

The pancreas secretes pancreatic juice, which contains a variety of enzymes that help break down carbohydrates, proteins, and fats in the small intestine.

These enzymes include amylase, lipase, trypsin, and chymotrypsin, among others.

Explanation

Peristalsis is a wave of rhythmic movements of muscle contraction and relaxation that helps move substances through a tubular structure, like the digestive tract.

It's a vital process that facilitates the transport of food, water, and waste products through the digestive system.

Explanation

The stomach is a J shaped sac about one foot in length that lies under the diaphragm on the left of the abdominal cavity.

The stomach has three parts:

1. The region where the stomach opens is known as the cardiac stomach.
2. The main body is known as fundus.
3. The posterior portion which opens to the intestine is known as the pyloric stomach.

Explanation

• Over-eating can lead to obesity.
• While consuming spicy food can irritate the stomach lining.
• It potentially causing ulcers in susceptible individuals.

Explanation

• The alimentary canal, also known as the gastrointestinal (GI) tract, is a continuous tube that extends from the mouth to the anus.
• It includes all the organs of the digestive system.

Explanation

• The stomach secretes stomach juices, also known as gastric juices, which contain digestive enzymes and acids that break down proteins, carbohydrates, and fats into smaller molecules.
• These juices help to digest food in the stomach.

Explanation

• The stomach mixes food with digestive enzymes and acids.
• It churning and blending it into a liquid mixture called chyme.
• Much like a mixer combines ingredients together.

Explanation

• Storage: Holds food temporarily
• Mechanical and chemical breakdown: Mixes and digests food with enzymes and acids
• Liquification: Converts food into a liquid mixture (chyme)
• Emptying: Releases chyme into the small intestine for nutrient absorption