The Repiratory System

Air Flow

Nose

Pharynx

Larynx

Inverted Tree:

Trachea - wind pipe

2 bronchii

alveoli

• squamous cells

• macrophages

• surfactents

Sites of Gas Exchange

Smooth muscle innervated by autonomic NS

Mechanics

Inhalation and Exhalation

• tidal volume,dead space, inspiratory reserve, expiratory reserve, VC

Regulation of Respiration

Ventilation precisely regulated

How is rate controlled?

CO2

Exercise