Class notes Medical Microbiology (medical)

Raymond J Playford
Professor Molecular Medicine, UWL
Week 3 &
Pulmonary
anatomy/physiology Visiting Consultant gastroenterologist, St Georges
Trust
and pathology



, Key learning points
Understand structures of respiratory system
Understand structure of pharynx, & larynx
Understand anatomy of trachea, bronchi and alveoli
Understand mechanism of inspiration and expiration
Understand tests of lung function including terms such as tidal vo
Describe the main values of oxygen and CO2 for alveolar air,
oxygenated blood and deoxygenated blood.
Understand difference between external and internal respiration
Understand control of respiration
Understand how common medical conditions may affect the lungs
and lung function tests

,Functions of the Respiratory System

• Provides for gas exchange—intake of O2 for delivery to body
cells and removal of CO2 produced by body cells.

• Helps regulate blood pH.

• Contains receptors for the sense of smell, filters inspired air,
produces sounds, and excretes small amounts of water and he

, Structures
associated with
respiratory
system