Question

Is small intestion can be said second brain?

Answer 1

no the small intestine isnt the second brain cause it only handels the digestive system

Answer 2

The enteric nervous system has been described as a "second brain" for several reasons. ... More than 90% of the body's serotonin lies in the gut, as well as about 50% of the body's dopamine, which is currently being studied to further our understanding of its utility in the brain