Tusomesasa.

Explain how inspiration take place in man.(10marks)

Suggested resposponses

External intercostal muscles contract; internal intercostal muscles relax; The ribcage moved outwards; and upwards; diaphragm muscles contract; and the diaphragm falttens; volume in the thoracic cavity increases; and pressure decreases; air from the atmosphere which is at a higher pressure; rushes into the lungs and the lungs inflate;