Question

1. Distinguish between (AS1)
a) inspiration and expiration​

Answer 1

Explanation:

During inspiration, the diaphragm contracts and pulls downward while the muscles between the ribs contract and pull upward. ... During expiration, the diaphragm relaxes, and the volume of the thoracic cavity decreases, while the pressure within it increases.

...

Answer 2

Answer:

Expiration is just when you breathe out and inspiration when you breathe in - exhale and inhale. In fact your heart will slow down and speed up in this cycle especially when you breathe slowly, regularly and you are fit.