1. Respiration W Richards Worthing High School 19/11/2018
Please note – the animation effects used in the “Circulation” slide only work in PowerPoint XP

2. Respiration
19/11/2018
A while ago we learnt about ___ ______. Each of these life processes needs ENERGY. ___________ is the process our bodies use to produce this energy:
Glucose + oxygen water + carbon dioxide + ENERGY
The glucose we need comes from ______ and the oxygen from _________. Water and carbon dioxide are breathed out. The MAIN product of this equation is _________.
Words – breathing, energy, Mrs Gren, respiration, food

3. Gas Exchange Air breathed in Air breathed out 0.03% 3% 21% 18% 79% 79%
19/11/2018
Air breathed in
Air breathed out
0.03% 3%
21%
18%
79%
79%

4. 19/11/2018
Breathing

5. The Respiratory System
19/11/2018
Trachea – has stiff rings of cartilage to prevent it collapsing
Bronchi
Bronchioles
Rib muscles – to raise and lower the ribs
Ribs – to protect the chest
Lung
Alveoli (“air sacs”) – gas exchange takes place here
Diaphragm – muscular sheet

6. Gas exchange Alveoli are very good at exchanging gases because…
19/11/2018
Alveoli are very good at exchanging gases because…
They have a LARGE surface area
They have a good blood supply
They are moist

7. Circulation
19/11/2018
1) Blood gets pumped from the heart to the lungs and picks up oxygen
2) The blood is then taken back to the heart…
3) The heart pumps the blood to the intestine (where oxygen and glucose are removed)…
5) After the oxygen and glucose have been removed for respiration the blood is sent back to the heart and starts again
4) … and to the rest of the body (where oxygen is removed)