Question

Which system of our body is called second brain and why 10th class?

Answer 1

Hey mate

I think your question's answer is the blood circulation system.

Because, our brain works/controll our body on providing Oxygenated blood to the brain. this blood is transport by carotid artery from Heart to brain. If Oxygenated blood is not provided to the to the brain by heart then brain will stop his work. In that situation the chances of death of human are increases.

Therefore the blood circulation system. is called second brain.

hope it will help to you.

Have a great time.