LUNG

THE SEQUENCE OF WORKFLOW ,,,

CONDUCTING = NOSE,LARYNX AND TRACHEA (large roadways)
DISTRIBUTING = BRONCHI,BRONCHIOLES (distributors or distributing streets or small roads)
TRADING = ALVEOLI (tradepoint)

Respiratory physiology »> pulmonary ventilation »» forced expiratory flow rate »> maximal expiratory flow rate Respiratory physiology »> pulmonary ventilation »» forced expiratory flow rate »> peak expiratory flow rate Respiratory physiology »> pulmonary ventilation »» forced expiratory volume

respiratory physiology »> total capacity »» functional residual capacity »» residual volume respiratory physiology »> total capacity »» functional residual capacity »» expiratory reserve volume respiratory physiology »> total capacity »» vital capacity »> expiratory reserve volume respiratory physiology »> total capacity »» vital capacity »> inspiratory capacity »> tidal volume respiratory physiology »> total capacity »» vital capacity »> inspiratory capacity »> inspiratory reserve volume

LUNG IS NOT A HOLLOW ORGAN AND NOT A SOLID ORGAN RATHER IT IS AN ELASTIC AND COMPACT ORGAN DIFFERENT FROM OTHER LANDS.HENCE IT IS A CONGESTED PLACE FILLED WITH INHABITANTS WHO LIVE IN A C SHAPE SERIES OF GROUP OF PEOPLE WITH A CENTRAL SPACE OR TANK CALLED GAS TANK THROUGH WHICH EXCHANGE OF GASES TAKES PLACE.ALVEOLAR SEPTA DIVIDES THE TWO WORKPLACE OR ALVEOLI SIMILAR TO THE HEART LAND WHERE ATRIAL SEPTA AND VENTRICULAR SEPTA DIVIDE THEM.

traffic = inspiration = inward movement of traffic expiration = outward movement of traffic inspiration and expiration both cannot occur at same ,similarly outward movement of traffic and inward movement of traffic cannot occur at same but outward movement of traffic occurs after the inward movement and these two are repeated again and again in a cycle manner. this cycle is called breathing and is regulated by muscles (this land is governed by communication(nervous system).

IMAGINE alveoli as small gas balloons which are connected through pipes for filling and pumping A balloon is a flexible bag that can inflated with a fluid, as helium, hydrogen, nitrous oxide, oxygen, or . However, balloons have a certain elasticity to them that needs to taken into account. The act of stretching a balloon fills it with potential energy. When it is released, the potential energy is converted to kinetic energy and the balloon snaps back into its original position, though perhaps a little stretched out. When a balloon is filled with , the balloon is being stretched. While the elasticity of the balloon causes tension that would have the balloon collapse, it is also being pushed back out by the constant bouncing of the internal molecules. The internal has to exert not only to counteract the external to keep the pressures even, but it also has to counteract the natural contraction of the balloon. Therefore, it requires more pressure (or ) than the outside the balloon wall.

balloons = alveoli single balloon is connected to single pipe all single balloon with pipes connect together to form bronchi all these bronchi connect to the main road called trachea