13012022 Respiration Respiration 13012022 A while ago we

13/01/2022 Respiration

Respiration 13/01/2022 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

Gas Exchange Air breathed in 0. 03% 13/01/2022 Air breathed out 3% 21% 79% 18% 79%

Breathing 13/01/2022

The Respiratory System Bronchioles Ribs – to protect the chest Alveoli (“air sacs”) – gas exchange takes place here 13/01/2022 Trachea – has stiff rings of cartilage to prevent it collapsing Rib muscles – to raise and lower the ribs Lung Diaphragm – muscular sheet

Gas exchange Alveoli are very good at exchanging gases because… 1) They have a LARGE surface area 2) They have a good blood supply 3) They are moist 13/01/2022

Circulation 1) Blood gets pumped from the heart to the lungs and picks up oxygen 5) After the oxygen and glucose have been removed for respiration the blood is sent back to the heart and starts again 13/01/2022 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)… 4) … and to the rest of the body (where oxygen is removed)