If pituitary gland of adult human is surgically removed, which one of the glands is less affected/not affected?

If the pituitary gland of an adult human is surgically removed, the adrenal medulla is not affected. The adrenal medulla is the inner portion of the adrenal gland, and its function is primarily regulated by the sympathetic nervous system, not the pituitary gland.

The adrenal medulla is responsible for producing and releasing catecholamines, such as adrenaline (epinephrine) and norepinephrine, which play a role in the "fight or flight" response to stress. The release of these hormones is primarily controlled by nerve signals from the sympathetic nervous system.

The pituitary gland, on the other hand, plays a role in regulating the adrenal cortex, which is the outer portion of the adrenal gland. The adrenal cortex produces corticosteroid hormones, including cortisol and aldosterone, which are regulated by hormones such as adrenocorticotropic hormone (ACTH) released from the anterior pituitary gland.