Endocrine System?

Question

The best answer gets 10 pts.

Choose answers from these
1)Hypothalamus
2)Pituitary gland
3)Thyroid gland
4)Parathyroid gland
5)Islets of Langerhans

1)This endocrine gland secretes numerous hormones that directly regulate the activities of several other endocrine glands and body tissues.

Answer 1

Pituitary Gland. This is the 'master gland' and it is attached directly to the brain by connecting to the the part of the brain called the hypothalamus. It scretes hormones that control other glands, like TSH (thyroid stimulating hormone which controls the thyroid, FSH & LH (which control the ovaries), ACTH (which controls the adrenals) and so on. Hence, the brain directly controls the pituitary which controls the bodys endocrine glands. The pituitary gland also secretes hormones that don't control other glands, like growth hormone.

Answer 2

2 The Pituitary Gland

Answer 3

2) Pituitary gland

"The pituitary produces numerous hormones - some of which act directly, and some of which stimulate other endocrine glands (such as the thyroid and the ovaries) to secrete their own hormones. This stimulation of other glands so impressed early endocrinologists that they called the pituitary the body's "master gland". Now we know that it is the hypothalamus, rather than the pituitary, that is the real master of hormonal balance. In fact, the posterior part of the pituitary consists mostly of nervous tissue, and might be seen as an extension of the hypothalamus. It does not synthesize its own hormones, but secretes 2 hormones that are produced by the hypothalamus: antidiuretic hormone and oxytocin. The anterior pituitary produces its own hormones and secretes them; it consists mostly of glandular tissue." - http://www.life.uiuc.edu/bio104/l18Endocrine.html