Respiration NotesRespiration Notes

Respiration

The purpose of the respiratory system is to take ________ from around the body and transport it to the ___________. Once in the lungs, the _____________ is removed from the

air and carbon dioxide is added. Breathing in is called _________________ and breathing out is called

_____________________. Once in the lungs, the journey is not over. The final destination for the oxygen is your

body’s ____________.

airlungs

oxygen

inhalationexhalation

muscles

How does breathing change with exercise?

Which picture would cause me to breathe the hardest?

How does breathing change with exercise?

The greater your intensity, the faster your breathing.

In other words, the harder you work, the harder you breathe

Types of Respiration

Because the journey that oxygen takes is so long and complex, it is broken up into three parts that

involve the Respiratory System, Circulatory System and the Muscular System.

External Internal Cellular

External Respiration

This is the part of respiration where air moves from outside the body into the alveoli

External Respiration

This is the part of respiration where air moves from outside the body into the alveoli

Simplified – Air enters the body and travels to the lungs

Internal Respiration

This is part of respiration occurs in the alveoli. Oxygen is removed from the air and enters a blood vessel.

Internal Respiration

This is part of respiration occurs in the alveoli. Oxygen is removed from the air and enters a blood vessel.

Simplified – Oxygen moves from the alveoli into the bloodstream.

Cellular Respiration

This part of respiration occurs in the muscles. Oxygen moves from the blood vessels into a muscle and provides energy for contraction.

Cellular Respiration

This part of respiration occurs in the muscles. Oxygen moves from the blood vessels into a muscle and provides energy for contraction.

Simplified – Oxygen moves into a muscle for energy.

Let’s talk about gas

What are the two gases that are important to us in the respiratory system?

Oxygen and Carbon Dioxide.

O2 and CO2

How are their paths different

Oxygen:

External – Internal - Cellular

Carbon Dioxide

Cellular – Internal - External