The following is an excerpt....
BASICS
Description
- A sudden spasmodic contraction of the thoracic cavity resulting in violent release of air from the lungs and usually accompanied by a distinctive sound:
- Deep inspiration
- Glottis closes
- Expiratory muscles contract
- Intrapulmonary pressures increase
- Glottis opens
- Air expiration at high pressure
- Secretion and foreign material excretion
- Vocal cord vibration with tracheobronchial walls, lung parenchyma, and secretions
- Defense mechanism to clear the airway of foreign material and secretions:
- Voluntary or involuntary
- Involuntary coughing regulated by the vagal afferent nerves:
- Voluntary coughing under cortical control allowing for inhibition or voluntary cough
- Because of cortical control, placebos can have a profound effect on coughing.
- Reflex involves respiratory tissue receptor activation of afferent neurons to the central cough center followed by efferent ...
You must be logged in to fully access this content.
Sign up for a 30-Day Free Trial
Sign up for a 30-Day FREE Trial now and receive access to all content.
Have a book code?
Submit your book code to create your
FREE standard account.