Question

what is the second brain of human body

Answer 1

A primal connection exists between our brain and our gut. ... The enteric nervous system is often referred to as our body's second brain. There are hundreds of million of neurons connecting the brain to the enteric nervous system, the part of the nervous system that is tasked with controlling the gastrointestinal system.

Answer 2

enteric nervous system is considered as second brain of human body as it controls the functions of gut independently. it contains more than 100 billions of neurons which is grater than central and peripheral nervous system