4. Breathing

Success Criteria

Your learning has been successful if you can do the following:


Learn these so you can communicate this concept well.

Hei Mahi (Do Now)

Do Now in your Learning Journal:

Think back to the previous lesson. Arrange these parts in the order that air travels through when breathing in:

bronchioles, nose, alveoli, traceha, bronchi

Exit Task

In your Learning Journal:

Re-write this interpreting question so it is asking about Breathing:

What is the cause?

Then, write an answer for it.

What is breathing?

BREATHING is the contracting and relaxing of the intercostal muscles and the diaphragm  muscle to physically move air into and out of the lungs.

Breathing in (Inhalation)

To get air to flow into the lungs the area inside the chest cavity needs to be increased. This happens when:

As a result, the volume of the chest cavity increases and forces air to move air into the lung to equalise the air pressure inside and outside the lungs. 

Breathing out (Exhalation)

Breathing out happens when all of the muscles relax and the volume of the chest cavity decreases. Air rushes out as there is less space in the lungs for the air that is in there.

The volume of the chest cavity has decreased and air is pushed out of the lungs to equalise the air pressure. 

A bell jar can be used to model breathing, where the bell jar represents the chest cavity, the glass Y tube represents the airways, the balloons represent the lungs, and the rubber sheath represents the diaphragm. 

Grass Level Task - Wordwalls!

Grass Level Task - Structure and Function

Label the structures and complete the table.

S1.10 (4) Breathing.pdf

Sky Level Task - Revision

Revising Lung Structures and Breathing concepts 

S1.10 (4) Revising Structures and Breathing.pdf

Sky Level Task - Education Perfect

Task called 'S1.10 Concept 4: Breathing.