Lesson Starter Which side of the heart is bigger and why? What is the heart made of? What are the different types of blood cells and what are their jobs? What is the meaning of recovery time?

To learn about the Respiratory system Learning Intention To learn about the Respiratory system

The process by which you take IN oxygen and give OUT carbon dioxide. What is breathing? The process by which you take IN oxygen and give OUT carbon dioxide. When you breathe in: Your diaphragm goes down Your ribs expand Lungs get bigger When you breathe out: Your diaphragm goes up Your ribs move inwards Lungs get smaller

What is breathing? (copy) The process by which you take IN oxygen and give OUT carbon dioxide. When you breathe in: Your diaphragm goes down Your ribs expand Lungs get bigger When you breathe out: Your diaphragm goes up Your ribs move inwards Lungs get smaller

Lungs Blood- picks up oxygen, drops off carbon dioxide Gas Exchange Large surface area

Alveoli Tiny air sacs- Adapted to make gas exchange in lungs happen easily and efficiently. Features of the alveoli that allow gas exchange Moist, thin walls (just one cell thick) Massive surface area Capillaries:- excellent blood supply

Alveoli (copy) Alveoli are tiny air sacs found inside the lungs. They are adapted to make gas exchange easy and efficient. Features of the alveoli that allow gas exchange Moist, thin walls (just one cell thick) Massive surface area Capillaries:- excellent blood supply

The gases move by diffusion. Gas Exchange The gases move by diffusion. High concentration to a low concentration: Oxygen diffuses from the air in the alveoli into the blood. Carbon dioxide diffuses from the blood into the air in the alveoli.

Lung Dissection https://www.twig-world.com/experiment/dissection-lungs-4180/#

The structure of the lungs Trachea= windpipe Held open by rings of cartillage Trachea splits into 2 Bronchi (bronchus) Bronchus branch off into tiny branches- Bronchioles Alveoli at end of bronchioles

Draw and label Trachea Bronchioles Bronchus Lung Alveoli (“air sacs”) Diaphragm

Tweet Me Using no more than 140 characters; tell me something you learned today that you didn’t already know.