The posterior lobe of pituitary gland is not a 'true' endocrine gland because:
It is under the regulation of hypothalamus.
It secretes enzymes.
It is provided with a duct.
It only stores and releases hormones.
A
It secretes enzymes.
B
It is under the regulation of hypothalamus.
C
It only stores and releases hormones.
D
It is provided with a duct.
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Solution
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Oxytocin and vasopressin hormones are produced by the hypothalamus but stored and are released into the bloodstream via the posterior pituitary. That's the reason why it is not a true endocrine gland. Endocrine glands are the ductless glands that secrete and release hormones in the blood directly.
Therefore, the correct answer is option D.
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