The cough reflex has
5 components: 1)
cough receptors 2)
afferent nerves 3)
coughhh center 4)
efferent nerves 5)
effector muscles
Diaphragm and external intercostal
muscles contract, creating a negative
pressure around the lung. Air rushes into
the lungs in order to equalise the pressure.
A group of diseases characterized by chronic or recurrent obstruction to the airflow
Chronic Bronchitis
Persistent productive cough not attributable to other causes on most
days for at least 3 months over 2 consecutive years
Emphysema
Chronic lung disease
characterized by
permanent enlargement
of the airspaces distal to
the terminal bronchioles
accompanied by
destruction of their
walls but without
obvious fibrosis
Asthma
Chronic relapsing
inflammatory disorder
characterized by episodic
reversible bronchospasm
Extrinsic
type I hypersensitivity reaction induced
by exposure to an extrinsic antigen.