lungs

Lungs 

Lungs are not made of any muscle tissue at all and are paralysed

The lungs require the increasing and decreasing pressure created by the movement of the diaphragm

Structure

Physiology

Function

Trachea

Large lumen,cartlidge ridged

Allows large quantities of air through, must cope with changing pressure

Bronchi

First branch off trachea, quite large, cartilage ridged

Allows large quantities of air through, must cope with changing pressure

Bronchioles

Small lumen,cartlidge ridged

Allow smaller amounts of air, has to cope less with changing pressure

Lobes

Tissue compromising of bronchioles and alveoli

Gas exchange 

Gas exchange 

The body needs to exchange carbon dioxide for oxygen. 

It does this for cellular respiration and it happens in the alveoli 

Diffusion is the net movement of particles from an area of higher concentration…