which structure secretes hormones directly into the bloodstream without using a duct?\no lacrimal gland\no…

which structure secretes hormones directly into the bloodstream without using a duct?\no lacrimal gland\no adrenal gland\no oil gland\no salivary gland
Answer
Brief Explanations:
Endocrine glands secrete hormones directly into the bloodstream without ducts. The adrenal gland is an endocrine gland. Lacrimal, oil, and salivary glands are exocrine glands which secrete substances through ducts.
Answer:
B. adrenal gland