Complex sentence: The posterior pituitary is not glandular as is the anterior pituitary gland, it is instead, largely a collection of axonal projections from the hypothalamus that terminate behind the anterior pituitary gland, and is also a store for the later release of neurohypophysial hormones.
Split into simpler sentences: The posterior pituitary is not glandular as is the anterior pituitary. It is instead, largely a collection of axonal projections from the hypothalamus that terminate behind the anterior pituitary gland, and is also a store for the later release of neurohypophysial hormones.