Inspiration and Expiration

The volume of air in the lungs and the rate at which it is exchanged during inspiration and expiration was measured. The following diagram shows a group of the lung volumes and capacities : Study the diagram carefully and explain briefly the following: (a) Tidal volume (b) Inspiratory reserve volume (c) Expiratory reserve volume (d) Vital capacity (e) Residual volume

Humans can increase the strength of both inspiration & expiration with the help of

Inspiration can occur if

After deep inspiration, maximum expiration of lungs is called

Consider the following four statements (a-d) and select the option which includes all the correct ones only :- (a) All the time of inspiration , contraction in diaphragm and external intercostal muscles take place. (b) Normal breathing is also called as abdominal breathing. (c ) Expiration during sneezing, coughing, yoga is normal expiratio during which IICM and abdominal muscles relax. (d) Inspiration can occur if the pressure within lungs (intra pulmonary pressure) is more than the atmospheric pressure.

What is the normal percentage composition of gases in inspired air and expired air respectively?

Fill up the blanks in the following paragraph by selecting the correct option. The movement of air into and out of the lungs is carried out by creating a (i).____ between the lungs and the atmosphere. Inspiration can occur if intra-pulmonary pressure is (ii).____ Expiration takes place when the intra-pulmonary pressure is (iii).____ than the atmospheric pressure. Expiration takes place when the intra-inspiration is initiated by the (iv).____ of diaphragm which (v).____the volume of thoracic chamber in the antero-posterior axis.

during inspiration

During inspiration ,

During inspiration ,