Question

why is alimentary track also called as second brain​

Answer 1

Brain in the gut coordinates activity of millions of neurons to propel waste through digestive system. ... The enteric nervous system (ENS) is known as the "second brain" or the brain in the gut because it can operate independently of the brain and spinal cord, the central nervous system (CNS).

Answer 2

Answer:

The enteric nervous system (ENS) is known asthe "second brain" or the brain in the gut because it can operate independently of thebrain and spinal cord, the central nervous system (CNS). ... These findings identify a previously unknown pattern of neuronal activity in the peripheral nervous system.