The posterior pituitary gland is not a 'true' endocrine gland because

(a) it is provided with a duct 

(b) it only stores and releases hormones 

(c) it is under the regulation of hypothalamus 

(d) it secretes enzymes

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1 Answers

The correct option is (b) it only stores and releases hormones.

Explanation:

The posterior pituitary gland is not a 'true' endocrine gland because it only stores and releases two hormones - oxytocin and vasopressin, which are actually synthesised by the hypothalamus and are transported to the posterior pituitary through hypophysical portal system. Hence option (b) is correct.

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