Question

difine respiratory system

Answer 1

Respiration is a vital process in all living organisms. It goes on non-stop throughout life .The various aspects related to respiration -the raw material used ,the end products formed and the of energy liberated , etc .Respiration is the chemical process of realeasing energy by breaking down glucose for carrying out life process. Human respiration involves four major steps -breathing, gaseous transport , tissue respiration and cellular respiration. The lungs are a pair of spongy elastic organs .