Animal System and Digestive System

What is a system?

A system is made up of different parts working together to carry out a certain function

Major Systems in the human body

Respiratory System

Circulatory System

Muscular System

Skeletal System

Digestive System (Elaboration on different parts)

Functions

Parts

Muscles

Function

Helps in the movement of various body parts

Parts

Parts

Bones, Ligaments, Tendons, Cartilage

Functions

Gives the body shape and support

Protects some important internal organs

Provides the attachment point for muscles to attach as to help the bones to move

Absorbs water and minerals in the body

Parts

Nose, Windpipe, Lungs, Diaphragm

Functions

Takes in oxygen so that the body can use it to obtain energy from food

Removes carbon dioxide from the body as carbon dioxide can be harmful

Heart and Blood Vessels

Functions

Transports useful substances, such as water, food, oxygen and other nutrients to all parts of the body

Transports waste substances and carbon dioxide from all parts of the body so that they can be removed from the body

To break down food so that our body can absorb digested food and nutrients

1 - Mouth

2 - Gullet

Partially digested food from the mouth moves along it to the stomach

Stomach

Digestive juice is released. The stomach churns and mixes the food with the digestive juices to digest some food.

Small Intestine

Digestion of food is completed, and the simple substances, which are also nutrients, are absorbed by the blood stream.

These nutrients are then transported to all parts of the body through the blood.

Large Intestine

Water from the undigested food are absorbed into the body

Anus

Solid wastes or faeces are passed out of the body

Saliva

Teeth

a digestive juice

mixed with some of the food

Food is chewed into smaller pieces

increase surface area of food

speeding up digestion.