Free Digestion MCQs with Answers

• A. Glottis
• B. Cheeks
• C. Tongue
• D. Epiglottis

Explanation: The Epiglottis is a leaf-shape flaf in the throat that prevents food from entering the windpipe and the lungs.

• A. 3
• B. 6
• C. 4
• D. 2

Explanation: Human oral cavity have three type of salivary glands: •Parotid glands (located near the ears) •Submandibular glands (located under the…

• A. Amylase
• B. Glucagon
• C. Gastrin
• D. Insulin

Explanation: Amylase is an enzyme that helps in the breakdown of starch into sugars, aiding in the digestion process.

• A. Pepsinogen
• B. Secretin
• C. Gastrin
• D. Insulin

Explanation: High protein in food stimulates the release of gastric which acts on apthelial cells to increase the digestion of stomach.

• A. Middle
• B. Innermost
• C. Outermost
• D. Connective tissue layer

Explanation: As the middle layer is made up of smooth muscle which contract and relax and generate peristaltic which is responsible for contraction and…

• A. Acylglycerols
• B. Amino acids
• C. Peptones and polypeptide
• D. Dipeptides

Explanation: Pepsin break down proteins into smaller fragments called peptones and polypeptides.

• A. Option A
• B. Option B
• C. Option C
• D. Option D

Explanation: Pepsin is a proteolytic enzyme, meaning it breaks down proteins. It functions in the acidic environment of the stomach, where the stomach…

• A. Fatty acids + glycerols
• B. Amino acids + peptones
• C. Glucose monomers
• D. Glucose + Galactose

Explanation: Lactose is composed of glucose and galactose; lactase is enzyme that breaks lactose.

• A. Small intestine
• B. Large intestine
• C. Mouth
• D. Stomach

Explanation: Small intestine has duodenum, jejunum and ileum for complete digestion and absorption due to to their secretions and large surface area.

• A. Hepatic portal vein
• B. Mesnteric vein
• C. Villi
• D. Hepatic vein

Explanation: In intestine villi have lacteals which absorb fat and carry lipoprotein as chylomicrons.

• A. Maltase
• B. Lipase
• C. Enterokinase
• D. Erypsin

Explanation: Lipase is an enzyme for lipid digestion which is secreted from pancreas and intestinal lining of small intestine.

• A. Goblet cells
• B. Blood vessels
• C. Lacteals
• D. Crypts

Explanation: Protein present in lymph combines with fats absorbed from digestive system through lacteals.

• A. Water and sloughed-off mucosal cells
• B. Cellulose and inactive enzymes
• C. Organic and inorganic salts
• D. Gastrin and secetrin

Explanation: Gastric and secretrin are the hormones which are secreted into the blood and do not pass to large intestine as fecal material.

• A. Surface
• B. Volume
• C. Diameter
• D. length

Explanation: Small intestine has smaller diametre as compared to large intestine.

• A. Ptyalin
• B. Lipase
• C. Erypsin
• D. Lactase

Explanation: Ptyalin is present in oral cavity for starch digestion.

• A. Right lymphatic duct
• B. Subclavian vein
• C. Thoracic lymphatic duct
• D. Jugular vein

Explanation: Thoracic lymphatic duct is the duct which transfers lipoproteins into blood.

• A. Oral cavity and stomach
• B. Buccal cavity and duodenum
• C. Duodenum and ileum
• D. Esophagus and proximal part of small intestine only

Explanation: Amylase and Amylopsin are present in the buccal cavity (oral cavity) and duodenum respectively for starch digestion.

• A. Both released as pro-enzymes
• B. Both are endo-peptidase
• C. Both act upon same substrate
• D. Both act at same site and pH

Explanation: Pepsin is present in the stomach and works in acidic pH while trypsin is present in the small intestine and works in alkaline pH.

• A. Esophagus and Stomach
• B. Pancreas and Ileum
• C. Stomach and Duodenum
• D. Pancreas and Liver

Explanation: Pancreas and liver both are endocrine glands that are involved in digestion.

• A. Secretrin
• B. Thyroxine
• C. Gastrin
• D. Parathonnone

Explanation: Secretrin is a hormone released into the blood stream by the duodenum (especially in response to acitidity )to control secretion by the…