Animal system and the digestive system

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

A torch needs a few parts working together

A fork does not need other parts to pick up food

such as batteries and light bulb

in order to give off light

It is a system

It is not a system

In living organism

Their bodies consist of several organ system

They work together to support their lives

If any one of the organ system fails

The living organism cannot function properly anymore and will die

Some of the major organ system in the human body include

The digestive system

The respiratory system

The circulatory system

The muscular system

The skeletal system

Mouth

Gullet

stomach

Small intestine

Large intestine

Absorbs water from undigested food

Absorbs digested food into the blood stream

Connect the mouth and the stomach

Breaks down food into simpler substances

Digest the food

Different types of muscles in the body

Helps in the movement of various body parts

Bones

Ligaments

Tendons

Cartilage

Gives the body shape and support

Connect bone to bone

Connect muscle to bone

Nose

Windpipe

Lungs

Diaphragm

It takes in oxygen

Gives out carbon dioxide

Oxygen from lungs moves to heart

Transport oxygen

Heart

Blood vessels

It transport useful substances

It transport waste substances and carbon dioxide from all parts of the body

So that they can be removed

Anus

It is where solid wastes or feaces are passed out of the body

How the size of food affects the speed of digestion

The size affects how fast the food is digested

The size affects the amount of exposed surface area

The smaller the food

The larger the exposed surface area to the digestive juices

The faster it will be digested

The larger the food

The smaller the exposed surface area to the digestive juices

The slower it will be digested