THE RESPIRATORY
SYSTEM
The organ system responsible for gaseous exchange
between the atmosphere and the blood
Respiration: is the exchange of O2 & CO2 that occurs in
the lungs and the cells
Functions:
COMPONENTS OF THE RESPIRATORY SYSTEM
UPPER RESPIRATORY TRACT
OPEN PASSAGES FROM EXTERIOR TO LUNGS
LOWER RESPIRATORY TRACT
STRUCTURES/PASSAGES WITHIN THE LUNGS
UPPER RESPIRATORY TRACT – detail
1. Nasal Cavity
Advantages:
2. Pharynx
3. Larynx (voice box)
4. Trachea (wind pipe)
5. Primary Bronchii
LOWER RESPIRATORY TRACT – detail
1. Bronchii
2. Bronchioles
3. Alveoli
Respiratory Membrane:
Summary:
Anatomical features that facilitate gaseous exchange
THE LUNGS
Location:
Structure:
coverings: pleura
function of pleura:
Blood vessels:
Pulmonary circulation
Bronchial arteries