16. which of the following statements is true of the adrenal glands?
a. they're located in the neck.
b. they're ductless glands.
c. they regulate the pituitary gland.
d. they secrete prolactin.

(b) they are ductless glands. 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, found above the kidneys. Each gland has an outer cortex which produces steroid hormones and an inner medulla.