Cough

Question 1

What type of response is a cough?

Answer 1

A spontaneous reflex arc

Question 2

Name the three phases of a cough

Answer 2

Inspiratory
Compressive
Expiratory

Question 3

Describe Inspiratory phase of cough?

Answer 3

Stimulation of cough receptors.
Opening of glottis by contraction of the arytenoid cartilage with inhalation.
Lets more air in the lungs.

Question 4

Describe the Compressive phase of a cough?

Answer 4

Closure of glottis - air trapped in lungs
abdo muscles contract at same time
increased pressure and compression on alveloi and bronchioles

Question 5

Describe Expiratory phase of a cough?

Answer 5

Vocal chords and epiglottis open and air leaves lungs = cough

Internal intercostal muscles and abdominal muscles contract.

Question 6

Function of a cough?

Answer 6

• Prevents pulmonary aspiration
• Promotes ciliary action
• Clears airway debris - including dust, mucus and pathogens