Respiratory system

Simply put, the respiratory system is the anatomy involved in gas exchange

 

 

Simple organisms can simple diffuse gases:

Image result for amoeba respiratory system

 

More complex organisms need some way to get gases inside:

Image result for insect respiratory system

 

Some organisms breathe oxygen (like you), others breathe carbon dioxide (like a tree):

Image result for plant respiratory system

They have little holes:

Image result for plant respiratory system

 

Humans breathe like this:

Image result for human respiratory system inhalation exhalation

 

Humans look like this:

Image result for Human respiratory system

 

We breathe in through our nose to filter the air, moisten the air, warm the air, and smell.

The pharynx is the part of the throat shared by both digestive and respiratory systems.

The larynx is the voice box.

The trachea is held open by rings of cartilage.

The branching is call bronchi and bronchioles.

Gas exchange occurs in the alveoli:

Image result for human respiratory system alveoli

 

Some diseases / disorders of the respiratory system:

Collapsed lung
Punctured lung
Emphysema
Pneumonia
Asthma