During inspiration ,

Which statements are correct ? (A) During inspiration intra pulmonary pressure is less than the atmospheric pressure. (B) During expiration diaphragm contract. (C) Epiglottis is bony flap which prevent entry of food into the larynx. (D) During forceful expiration abdominal muscles contract.

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

How do the following contribute in inspiration during breathing? (i) Ribs (ii) Diaphragm

A: Normal expiration during quiet breathing, unlike inspiration, is a passive process because on muscular contractions are involved. R: Normal expiration results from the elastic recoil of the chest wall and lungs.

A: Normal expiration during quiet breathing, unlike inspiration, is a passive process because on muscular contractions are involved. R: Normal expiration results from the elastic recoil of the chest wall and lungs.

An additional volume of air, a person can inspire by a forceful inspiration is known as