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Respiration is with the help of lungs..

Carbon dioxide is a catabolic waste product formed due to oxidation of food releasing energy. It is carried by the blood to the lungs. During expiration this carbon dioxide along with a small quantity of water vapour is expelled out of the lungs..

There are a pair of lungs in the thoracic cavity - the left lung and the right lung. The left lung is slightly smaller (because of the heart which is slightly to the left of the body) and has two lobes and the right lung is bigger with three lobes...

Heart Lung Machine - Before surgeons can perform open-heart surgery or heart transplants or even to correct a simple heart defect, they have to be able to open up the heart and expose the chambers. To enable this, circulation and respiration are maintained by the heart - lung ma..

It acts as an extra embryonic lung and helps in exchange of gases. It also plays an important part in embryonic respiration, excretion and nutrition by developing into a placen..

Cancer is the result of uncontrolled division of certain cells. It is localized in the initial stages. The uncontrolled divisions produce structures called the tumours. If the tumours are present in the lungs, then it is called lung cancer. It is one of the chief killers among ..

The functional attributes of an ecosystem helps to keep its component parts running together. Few important functional aspects of an ecosystem ar..

Any relation on A x B in which (i) no two second elements have a common first element and (ii) every first element has a corresponding second element is called a function..

The nervous system carries out the following functions i) It perceives the changes around us through our senses. ii) It controls and coordinates all the activities of the muscles in response to the changes outside. iii) It also maintains the internal environment of the body by coordinati..

A function is a relation on A x B is which (i) no two second elements have a common first element. (ii) every first element has a corresponding second element. Every function is either one-one onto or one-one into or many-one onto or many-one into...