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state the three common features of respiratory organ of animals?

 

  1. All the respiratory organs have large surface area to transport/exchange enough oxygen.
  2. All the respiratory organs have thin walls for easy diffusion and exchange of respiratory gases.
  3. All the respiratory organs such as skin, gills and lungs, have a rich blood supply for transporting respiratory gases.

 

@ Suchita: Good answer! Keep Posting!!

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large surface for maximum diffusion of oxygen and carbion dioxide
a large network of capillaries to allow oxgen to enter the alveoli and carbon dioxide to leave the lungs and body
a thin wall for faster diffusion
moist to allow gases to dissolve enabling them to be be transported to where they are required quickly
a counter current multiplier which ensures that there is always a concentration gradient 
this means that oxygen can diffuse from a where its a high concentration in the lungs to a lower concentration in the blood going to the alveoli

hope it helps......!!!!!!

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We know that there is a constant exchange of atmospheric gases. Oxygen is inhaled and carbon dioxide is exhaled. If oxygen is inhaled, then it must be used for some activity in the body. Similarly, if carbon dioxide is exhaled out of the body, then it must be because it is not required. This important life process is called respiration.

What is the role of oxygen in the body? Why is carbon dioxide thrown out of the body?

Respiration is the bodily process of inhalation and exhalation. It is the process of taking in oxygen and releasing carbon dioxide. The process involves the consumption of oxygen and liberation of carbon dioxide and water.

The oxygen inhaled is used to burn/oxidize/break down the food (glucose). This reaction produces energy required for all activities. Water and carbon dioxide are by-products of this reaction. This process occurs inside the mitochondria and is called cellular respiration. It is exactly opposite to the process of photosynthesis. It can be represented as:

Thus, cellular respiration is the process by which energy is released from the breakdown of organic substances (glucose).

hope it helps u!

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