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9 September, 12:07

Which structure secretes hormones directly into the bloodstream without using a duct?

lacrimal gland

adrenal gland

oil gland

salivary gland

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  1. 9 September, 12:47
    0
    The answer is adrenal gland.

    Hormones are chemical signaling molecules secreted by glands, either endocrine or exocrine. Endocrine glands secrete hormones directly into the bloodstream without using a duct, unlike the exocrine glands. Endocrine glands include pancreas, hypothalamus, pineal gland, pituitary gland, thyroid gland, parathyroid gland, adrenal gland, ovaries, testes
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