Primary Function of the

respiratory system

(Gas exchange)

      Allowing oxygen from the air to enter the          blood and carbon dioxide from the blood to exit into the air.

Process of Respiration

Includes:

• Breathing (ventilation)
• External Respiration
• Internal Respiration
• Transport of gases 

Funnel-shaped passageway that connects the nasal and oral cavities to the larynx.

*throat*

A flap of elastic cartilage that prevents food from passing through the glottis into the larynx.

3 for the right lung

2 for the left lung

Supplys each lube of the lungs

*divide into tertiary bronchi*

Site of gas exchange

Sacs are made up of simple squamous epithelium surrounded by blood capillaries.

When air is expelled past the vocal cords through the glottis, the vocal cords vibrate, producing sound.

The pressure that forms between the two layers of the pleura.

The amount of air remaining in the lungs after very deep exhalation.

Maximum volume of air moved in and out during a single deep breath.

2,900 ml Inspiratory reserve volume

1,400 ml Expiratory reserve volume

Air moved in and out with each breath

about 500 ml

Exchange of gases in the tissues (between the blood in systemic capillaries and tissue fluids).

Oxygen leaves the blood and Carbon Dioxide enters the blood passively by diffusion.

Exchange of gases in the lungs (between the air in the alveoli and the blood in the pulmonary capillaries)

Carbon dioxide leaves the blood and oxygen enters the blood passively by diffusion.

Pigment in Red blood cells.

Emphysema

Lung Cancer