At the time of inspiration, _________ takes place.
(a) relaxation in external intercostal muscle
(b) relaxation in diaphragm
(c) contraction in diaphragm
(d) no effect on diaphragm
This question was addressed to me in an interview for job.
This intriguing question comes from Mechanism of Breathing-1 in chapter Breathing and Exchange of Gases of Biology – Class 11