The Breathing System

HideShow resource information

The Lungs are in the Thorax (top part of your body)

The thorax is separated from the abdomen by the diaphram

The air that is breathed in goes through the trachea- this splits in two and become bronchi- one 'bronchus' going into each lung.

These bronchi split again into smaller tubes called bronchioles.

This is finally ended by small bag structures called alveoli where gas exchange takes place

Breathing In

1- The intercostal muslces contract

2- The thorax volume increases

3- This decreases the pressure

The

Comments

No comments have yet been made

Similar Biology resources:

See all Biology resources »See all Respiration and exercise resources »