Free Digestion MCQs with Answers

• A. Epiglottis
• B. Diaphragm
• C. Neck
• D. Tongue

Explanation: The epiglottis is a small flap of tissue located at the base of the tongue, near the entrance of the windpipe (trachea).

• A. Bolus
• B. Chyme
• C. Both bolus and chyme
• D. Protein

Explanation: Bolus: The bolus refers to the ball-like mass of food that is formed in the mouth after chewing and mixing with saliva.

• A. Mouth
• B. Stomach
• C. Esophagus
• D. Duodenum

Explanation: Mouth: In mammals, the digestion of starch begins in the mouth. The process starts with the mechanical breakdown of food through chewing…

• A. Duodenum
• B. Jejunum
• C. Ileum
• D. Both Options A and B are correct

Explanation: a) DuodenumThe duodenum is the first part of the small intestine. It is a short and C-shaped segment of the gastrointestinal tract…

• A. Trypsinogen
• B. Pepsin
• C. Trypsin
• D. Pepsinogen

Explanation: Chief cells within the gastric glands secrete inactive pepsinogen. Pepsinogen is packaged in zymogen granules which are released by…

• A. Grinding
• B. Lubrication
• C. Absorption
• D. Digestion

Explanation: Option A : In the oral cavity, the teeth, which are the chief structures of the oral cavity, tear and grind ingested food into pieces…

• A. Bolus
• B. Chyme
• C. Serum
• D. Food

Explanation: The semi-solid mass in the stomach is known as chyme. Bolus is the semi-solid mass of chewed food that enters the stomach.

• A. Peristalsis
• B. Anti peristalsis
• C. Swallowing
• D. Hunger pangs

Explanation: Peristalsis is a series of wave-like muscle contractions that move food through the digestive tract.

• A. Anorexia
• B. Botulism
• C. Piles
• D. Obesity

Explanation: Obesity is a chronic medical condition characterized by excess body fat.

• A. Glottis
• B. Epiglottis
• C. Larynx
• D. Vocal cords

Explanation: "Epiglottis" is the flap-like structure present in the upper part of the larynx.

• A. Sublingual gland
• B. Submaxillary glands
• C. Parotid glands
• D. Adrenal glands

Explanation: The submandibular glands (previously known as submaxillary glands) are a pair of major salivary glands located beneath the lower jaws…

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

Explanation: The major enzyme present in saliva is salivary amylase. Ptyalin is a form of salivary amylase.

• A. Maltase
• B. Proteases
• C. Amylase
• D. Lipase

Explanation: Lipase, any of a group of fat-splitting enzymes found in the blood, gastric juices, pancreatic secretions, intestinal juices, and adipose…

• A. Soya bean
• B. Tree of heaven
• C. Eggplant
• D. Devils dung

Explanation: Soybeans are an excellent source of high quality protein.

• A. Pancreatic juice
• B. Bile
• C. Gastric juice
• D. Intestinal juice

Explanation: Lipid emulsification is done by bile. Bile is a fluid that is produced by the liver and stored in the gallbladder.

• A. Pepsin
• B. Pepsinogen
• C. Gastrin
• D. HCL

Explanation: HCL (Hydrochloric acid): This option is the correct answer. Oxyntic cells, also known as parietal cells, in the stomach are responsible…

• A. Secretin
• B. Gastrin
• C. Thyroxine
• D. Parathormone

Explanation: Pancreatic juice is produced by the walls of the duodenum, and by the action of autonomic innervation.

• A. Liver
• B. Pyloric region of stomach
• C. Adrenal gland
• D. Mucosal lining of intestine

Explanation: Gastrin hormone is released by the pyloric region of the stomach. It is a peptide hormone that stimulates HCl secretion by parietal cells…

• A. Bolus
• B. Bolus or chime
• C. Mucus
• D. Chyme

Explanation: After food enters the stomach, the muscular walls of the stomach contract and mix the food with gastric juices, breaking it down into a…

• A. Symbiotic bacteria
• B. Obligate parasite
• C. Parasitic bacteria
• D. Facultative bacteria

Explanation: Some symbiotic bacteria are stored in the caecum, and help in the formation of 'Vitamin K', which is essential to the human body.