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Human Digestive System Overview

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Questions and Answers

Where are the taste buds located to taste the food?

In the nasal chambers
On the tongue (correct)
In the cheeks
On the root of buccal cavity

What is the length of the human alimentary canal?

3 meters
6 meters
9 meters (correct)
12 meters

What is the function of the buccal cavity?

To mix food with saliva and soften it (correct)
To carry food to the body cells
To absorb nutrients from food
To store digestive juices

What is the main function of the lips in the buccal cavity?

To help in sipping and sucking liquid (A) Signup and view all the answers

What is the function of the digestive glands in the digestive system?

Storing digestive juices (B) Signup and view all the answers

What is the main function of the tongue in relation to food?

Manipulating and lubricating food for easier chewing and swallowing (B) Signup and view all the answers

Where are the teeth located in the buccal cavity?

Partially embedded in the bony sockets of jaw bones (C) Signup and view all the answers

Which glands secrete mucus to keep the tongue moist?

Mucous glands in the cheek lining (B) Signup and view all the answers

What is the main function of the uvula during swallowing?

Guarding the opening of the trachea (C) Signup and view all the answers

What is responsible for the peristaltic movements that push food down the oesophagus?

Muscular wall contractions (D) Signup and view all the answers

What is the main function of the stomach in relation to food?

Aiding in digestion of proteins and small amounts of fats (A) Signup and view all the answers

Which part of the small intestine is about 25 cm long and C-shaped?

Duodenum (A) Signup and view all the answers

What is the function of sphincter muscles in the digestive system?

Contracting to close openings in the digestive tract (A) Signup and view all the answers

What is the length of the small intestine?

~6.25 metres (~20 feet) (D) Signup and view all the answers

What is the main function of the salivary glands?

Secreting saliva in the buccal cavity for easier swallowing (B) Signup and view all the answers

What do mucous glands produce to moisten and lubricate the lining of oesophageal tube?

Mucus (C) Signup and view all the answers