Question

Question 3
During the process of exhalation, the ribs move

(a) down and inwards
(b) up and inwards
(c) down and outwards
(d) up and outwards

Answer 1

The answer is (a).
During exhalation, ribs move down and inwards, while diaphragm moves upwards and relaxes. This reduces the size of the chest cavity and the air is expelled out of the lungs through a process called exhalation.