Question

What type of arrangement exists in the bodies of large animals to meet their oxygen requirements adequately?

Answer 1

Large animals have a highly efficient respiratory and circulatory system to meet their oxygen requirements.

• They possess specialised respiratory organs such as lungs (in humans and many animals).
• A highly branched network of air passages increases the surface area for gas exchange.
• The lungs contain millions of alveoli with a rich supply of blood capillaries for the rapid diffusion of gases.
• A circulatory system with a strong heart ensures the quick transport of oxygen to all body tissues.