Respiratory Physiology 7

1. Name the chemical that is given by inhalation to newborn baby with persistent pulmonary hypertension?

Nitric oxide

2. Pneumotoxic centre sends cut-off signal for inspiration. What is the other cut-off signal for inspiration?

Pulmonary stretch receptor stimulation

3. What is a spasmodic contraction of the diaphragm and other respiratory muscles that produce an inspiration during which the glottis suddenly closes called?

Hiccup

4. What is the condition due to excess elimination of Carbon dioxide from lungs as a result of hyperventilation?

Respiratory alkalosis

5. What is metabolic acidosis?

An increase in plasma H+

6. Why alcoholics are susceptible for choking / pneumonia?

Alcohol inhibits the cough reflex

7. Where are the J receptors located?

In the pulmonary capillary / interstitium

8. What is collapse of lungs due to presence of air in the pleural space called?

Pneumothorax

9. What is collapse of lungs due to the presence of tissue fluids in the pleural space called?

Hydrothorax / Chylothorax

10. Where is the best place to take a pulse reading of a deep-sea diver?

Carotid pulse

11. What is forced expiration against a closed glottis called?

Valsalva manoeuvre

12. What is the decrease in O2 affinity of haemoglobin when the pH of blood falls called?

The Bohr’s effect

 ( UMS, 2008 )