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What is the function of the nose?
Filters the air
What is the function of the alveoli
Gas exchange
Describe gas exchange
O2 into blood from lungs. CO2 out of blood into lungs,
List the steps of breathing in.
1. Intercostal muscles contract, ribs move up and out. Diaphragm contracts moving down. Volume of ribcage increases,pressure in lungs decrease.Air is sucked in
What chemical did we use to test the presence of Co2
Limewater
What is the function of the bronchus?
Carry air into the lungs
What is the function of the trachea
Carry air down to the lungs
What is the function of the ribs
To protect the lungs
What is the function of the lungs?
Gas exchange
Describe the link between circulatory and the respiratory system
The capillary’s surround the alveoli, and allow o2 to go into blood
What is the link between digestive system and respiratory system
Cough mucous into mouth, swallow, HCl in stomach kills bacteria
