Question

Explain Respiration ​

Answer 1

Question:-

• Explain Respiration?

Answer:-

• Respiration is the movement of oxygen from the outside environment to the cells within tissues, and the transport of carbon dioxide in the opposite direction.

• It is also the process by which cells use oxygen to break down sugar and obtain energy.

• Respiration is mainly classified into two:-

1. Aerobic Respiration:- Takes place in the presence of oxygen.Eg: Respiration in Humans,Animals
2. Anaerobic Respiration:- Takes place in the absence of oxygen.Eg: Respiration in Yeast,Amoeba

• Respiration is essential for survival of living organisms. It releases energy from the food. The oxygen we inhale is used to breakdown glucose into carbon dioxide and water.Breathing is a part of the process of respiration during which an organism takes in the oxygen-rich air and gives out air rich in carbon dioxide.It acts as a life saver for all the organisms.Plants,animals and humans are interdependent in respiration as humans and animals need Oxygen (O2) which is released by plants and plants need Carbon Dioxide (Co2) which is released both by animals and humans.

Answer 2

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The respiratory system (also respiratory apparatus, ventilatory system) is a biological system consisting of specific organs and structures used for gas exchange in animals and plants. The anatomy and physiology that make this happen varies greatly, depending on the size of the organism, the environment in which it lives and its evolutionary history. In land animals the respiratory surface is internalized as linings of the lungs. Gas exchange in the lungs occurs in millions of small air sacs called alveoli in mammals and reptiles, but atria in birds. These microscopic air sacs have a very rich blood supply, thus bringing the air into close contact with the blood.

These air sacs communicate with the external environment via a system of airways, or hollow tubes, of which the largest is the trachea, which branches in the middle of the chest into the two main bronchi. These enter the lungs where they branch into progressively narrower secondary and tertiary bronchi that branch into numerous smaller tubes, the bronchioles. In birds the bronchioles are termed parabronchi. It is the bronchioles, or parabronchi that generally open into the microscopic alveoli in mammals and atria in birds. Air has to be pumped from the environment into the alveoli or atria by the process of breathing which involves the muscles of respiration.