Question

the part of the brain which control activity of internal organ

Answer 1

$<b>$ hey mate

here's your answer,

$\huge\boxed{autonomic\:nervous}$

hope it helps you ✌✌

Answer 2

Medulla oblangata is the lowest part of the brain which controls the function of heart and lungs and even controls important functions such as breathing, sneezing etc.

Hope it helps......