Following diagram indicates the mechanism of breathing. Identify all the parts A, B, C and D correct

Question

Following diagram indicates the mechanism of breathing. Identify all the parts A, B, C and D correctly.\

Professor PC Thomas Classes · Answer

(d) : A - Air entering into lungs from the region of high pressure (atmosphere) to low pressure (lungs).\ B - Contraction of external inter-costal muscles pulls the ribs and raise the sternum.\ C - Contraction of muscles of the diaphragm.\ D - Volume of thoracic cavity increases.