Pulmonary Respiration

• Physical act of inhaling oxygen into lungs and exhaling carbon dioxide out.

• Diaphragm and rib muscles contract, causing pressure to decline and air enter (inhale)

• Diaphragm and rib muscles relax causing pressure to increase and air exit (exhale)

The complete seal of the lungs allows this to occur. Injury would cause problems.

Step 1 Step 2

Cellular Respiration Step 3The process of breaking down glucose (sugar) with

oxygen to give cells energy.

Occurs in each and every cell in the body.

6O2 + C6H12O6 6CO2 + 6H2O + Energy

Oxygen from inhalation

Glucose (sugar) from food

Carbon Dioxide Exhaled as waste

Water used by body or urinated out.

Energy cells can now use

Cellular Respiration

Step 4 Step 5

Respiratory Diseases• SARS – Severe Acute Respiratory Disorder

(virus causing fever and trouble breathing)

• Asthma – narrowing of bronchioles

• Emphysema – Damages alveoli

• Allergies – Pollen gets into alveoli

• Bronchitis – Inflamed bronchioles