query: Where is the adrenal gland located in the human body?
passage: Adrenal gland
The adrenal glands (also known as suprarenal glands) are endocrine glands that produce a variety of hormones including adrenaline and the steroids aldosterone and cortisol.[1][2] They are found above the kidneys. Each gland has an outer cortex which produces steroid hormones and an inner medulla. The adrenal cortex itself is divided into three zones: the zona glomerulosa, the zona fasciculata and the zona reticularis.[3]
passage: Dopamine
The largest and most important sources of dopamine in the vertebrate brain are the substantia nigra and ventral tegmental area.[34] These structures are closely related to each other and functionally similar in many respects.[34] Both are components of the basal ganglia, a complex network of structures located mainly at the base of the forebrain.[34] The largest component of the basal ganglia is the striatum.[41] The substantia nigra sends a dopaminergic projection to the dorsal striatum, while the ventral tegmental area sends a similar type of dopaminergic projection to the ventral striatum.[34]