Respiratory System

Question 1

two principal areas of the respiratory centre

Answer 1

• The medullary respiratory center in the medulla oblongata
• The pontine respiratory group in the pons.

Question 2

Factors which modify respiration

Answer 2

cortical influences; chemoreceptors; limbic system stimulation; proprioceptor stimulation; temperature; pain; irritation of airways; the inflation reflex (stretch receptors).

Question 3

What does the inspiratory area do?

Answer 3

sets the basic rhythm of respiration.

Question 4

Roles of the Medullary Respiratory Center (Doral respiratory group DRG) - Active

Answer 4

2 seconds, The Diaphragm contracts and the external intercostal muscles contract during the most active phase, Normal and quiet inhalation

Question 5

Roles of the Medullary Respiratory Center (Doral respiratory group DRG) - Inactive

Answer 5

3 seconds, The diaphragm relaxes and external intercostal muscles become less active and relax, followed by elastic recoil of lungs

Question 6

Roles of the Medullary Respiratory Center ( watch yt video)