8. Sensory Aspects of Respiratory Disease

Question 1

What are the two main aspects that cause symptoms?

Answer 1

Neurophysiology and behavioural psychology

Question 2

What are the steps of the neurophysiology aspects that causes symptoms?

Answer 2

Sensory stimulus -> Transducer (sensor) -> Excitation of sensory nerve -> Integration of CNS -> Sensory impression

Question 3

What are the steps of the behavioural psychology aspects that cause symptoms?

Answer 3

Sensory impression -> perception -> evoked sensation

Question 4

What is the cough mechanism for?

Answer 4

Protects the lower respiratory tract from inhaled foreign material and excessive mucous secretion

Question 5

What is coughing secondary to?

Answer 5

The mucociliary mechanism but it is important when the mucociliary function is impaired

Question 6

Describe the expulsive phase of the cough?

Answer 6

It generates a high velocity of airflow facilitated by bronchoconstriction and mucous secretion

Question 7

Where are cough receptors located?

Answer 7

They are localised In the trachea, nasal cavity, larynx and pharynx. Also in bifurcation in the lungs