Question

(c) 'While breathing cycle is rythmic,
exchange of gases is a continuous
process.' Justify

(d) The respiratory disorder in which
inflammation of air sacs in lungs takes
place is called:
(i) Pneumonia
(ii) Asthama
(iii) Bronchitis
(iv) None of these​

Answer 1

Explanation:

C. The breathing cycle involves inhalation and exhalation of air due to alternate expansion and contraction of thoracic cavity. Thus it is a rhythmic process. But exchange of gases is a continuous process as it takes place between the blood and each and every cell, by diffusion.

D. (II) Asthama

Asthma is defined as a common, chronic respiratory condition that causes difficulty breathing due to inflammation of the airways.

Answer 2

Explanation:

1. The breathing cycle involves inhalation and exhalation of air due to alternate expansion and contraction of thoracic cavity. Thus it is a rhythmic process. But exchange of gases is a continuous process as it takes place between the blood and each and every cell, by diffusion.

2. Asthma