Digestive system

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What is the primary function of the mouth in the digestive system?

Mastication (chewing)

Which gland secretes the largest amount of saliva?

Parotid (ear)

What is the main component of saliva?


Which type of acinar cells in the salivary glands produces amylase?


What is the primary function of saliva in relation to digestion?


What is the role of the pharynx in the digestive system?

Takes food to the stomach

Which sphincter prevents stomach contents from entering the oesophagus?

Gastroesophageal sphincter

What is the main function of the stomach in protein digestion?

Begins protein digestion through secretion of hydrochloric acid and enzymes

What controls the amount of chyme entering the small intestine?

Pyloric sphincter

What cells in the stomach mucosa produce mucus?

Mucous cells

What is the function of stomach acid?

Breaks down connective tissue

Which cells secrete histamines in the stomach?

Enterochromaffin cells

What is the role of D cells in the stomach?

Decrease production of stomach acid

Where does the duodenum receive chyme, bile, and pancreatic enzymes?


What is the main function of the colon?

Water and salt reabsorption

Which organ secretes bile and allows fats to be emulsified?


What causes osmotic diarrhea?

Too many solutes in the lumen

Which part of the digestive tract secretes succus entericus?

Small intestine

What type of diarrhea is caused by epithelial damage?

Inflammatory- epithelial damage causing them to be replaced with cells lacking transporters.

What cells aid in vitamin B12 absorption in the stomach?

Parietal cells

Saliva contains 99.5% proteins and 0.5% water


The parotid gland is the largest of the three pairs of salivary glands


The stomach's main function is to absorb nutrients from food


The gastroesophageal sphincter prevents stomach contents from entering the trachea


The pharynx takes food to the stomach and air to the oesophagus


Chief cells secrete pepsinogen, the inactive form of pepsin.


The parietal cells in the stomach secrete hydrochloric acid and intrinsic factor.


G cells in the stomach release somatostatin, which decreases the production of stomach acid.


The pancreas secretes enzymes such as amylase and lipase into the duodenum.


The large intestine has four parts: ascending, transverse, desending, and sigmoid colon.


Test your knowledge on the anatomy and functions of the mouth and salivary glands, including mastication, gland types, saliva composition, and key functions of saliva.

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