Humans Nutrition

Human nutrition

All the humans intake variety of food, according to their habitat, taste and health. To digest this food humans have digestive system, this digestive system helps to digest, absorb the food and excrete undigested food material. To perform these functions, digestive system contains two main parts :

1.) Digestive tract

2.) Digestive glands

1.) Digestive tract :It includes mouth, pharynx, esophagus, stomach, intestine, rectum and anus. The digestive tract starts with mouth and ends on anus.

  1. Mouth : Taking substances into body via mouth. The mouth contains teeth and tongue.

Teeth : They cut and chewing the food into a soft pulp that means it will be easy to swallow. Mixing the food with saliva.

Tongue : Moves the food into mouth and helps to swallow.

Pharynx : It is also known as throat. It receives the food from mouth and passes to esophagus.

  1. Esophagus : It is the passage between pharynx and stomach, to pass the food and drink to next part.
  2. Stomach : It acts as blender and mixing of food takes place in stomach. It also mix the acid with food.
  3. Intestine : It is the site for digestion and absorption of food material
  4. Rectum and anus : All the undigested food material is excrete out through the anus.

2.) Digestive glands : They produce the chemical secretion needed to breakdown the food material. It includes : salivary glands, gastric gland and intestinal glands. All these glands which produces chemicals which are required to swallow and breakdown food material.

 

Question and answers :

1.) What is digestion ?

Answer : Digestion is breaking down the food material into smaller molecules and absorb it.

2.) What are the parts of digestive system ?

Answer :All the humans intake variety of food, according to their habitat, taste and health. To digest this food humans have digestive system, this digestive system helps to digest, absorb the food and excrete undigested food material. To perform these functions, digestive system contains two main parts :

1.) Digestive tract

2.) Digestive glands

3.) What is digestive tract  ?

Answer :It includes mouth, pharynx, esophagus, stomach, intestine, rectum and anus. The digestive tract starts with mouth and ends on anus.

4.) What are digestive glands ?

Answer :They produce the chemical secretion needed to breakdown the food material. It includes : salivary glands, gastric gland and intestinal glands. All these glands which produces chemicals which are required to swallow and breakdown food material.

5.) Explain the digestive tract in detail.

Answer :The digestive tract starts with mouth and ends on anus.

1.) Mouth : Taking substances into body via mouth. The mouth contains teeth and tongue.

a.) Teeth : They cut and chewing the food into a soft pulp that means it will be easy to swallow. Mixing the food with saliva.

b.) Tongue : Moves the food into mouth and helps to swallow.

2.) Pharynx : It is also known as throat. It receives the food from mouth and passes to esophagus.

3.) Esophagus : It is the passage between pharynx and stomach, to pass the food and drink to next part.

4.) Stomach : It acts as blender and mixing of food takes place in stomach. It also mix the acid with food.

5.) Intestine : It is the site for digestion and absorption of food material

6.) Rectum and anus : All the undigested food material is excrete out through the anus.


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