The posterior pituitary gland is not a 'true' endocrine gland because
- it is provided with a duct
- it only stores and releases hormones
- it is under the regulation of hypothalamus
- it secretes enzymes.
Answer
(2) it only stores and releases hormones
Solution
As per NCERT, the neurohypophysis (pars nervosa), also known as posterior pituitary, stores and releases two hormones called oxytocin and vasopressin, which are actually synthesised by the hypothalamus and are transported axonally to the neurohypophysis.
∴ It does not synthesise any hormone of its own; it only stores and releases hormones.
Answer: (2)