which part of the left adrenal gland is part of the sympathetic division of the ans

The adrenal gland, located on top of each kidney, consists of two main parts: the adrenal cortex and the adrenal medulla. The adrenal medulla is the innermost part of the adrenal gland and is involved in the sympathetic division of the autonomic nervous system (ANS).

Specifically, the cells of the adrenal medulla are modified postganglionic neurons of the sympathetic nervous system. These cells release hormones such as adrenaline (epinephrine) and noradrenaline (norepinephrine) directly into the bloodstream in response to stress or stimulation of the sympathetic nervous system.

Therefore, it is the adrenal medulla, specifically its chromaffin cells, that is part of the sympathetic division of the autonomic nervous system. The adrenal cortex, on the other hand, produces steroid hormones such as cortisol, aldosterone, and sex hormones, and is not directly involved in the sympathetic division of the ANS.