What are the important hormones secreted by pituitary glands?

Many. The pituitary secretes a number of hormones, all of which are important. Anterior pituitary: follicle stimulating hormone, leutinizing hormone, adrenocorticotropic hormone, thyroid stimulating hormone, prolactin, and growth hormone. Posterior pituitary: oxytocin and antidiuretic hormone. Each serves a different but very important role.
Many. Including acth, tsh, gh, lh, fsh, and prolactin. Go to the pituitary network web site.