Answer:

1. Pituitary - The pituitary gland is a small, bean-shaped gland situated at the base of your brain, somewhat behind your nose and between your ears. Despite its small size, the gland influences nearly every part of your body. The hormones it produces help regulate important functions, such as growth, blood pressure and reproduction.

Acronyms : PIT

2. A hormone made by a part of the brain called the hypothalamus. GnRH causes the pituitary gland in the brain to make and secrete the hormones luteinizing hormone (LH) and follicle-stimulating hormone (FSH). In men, these hormones cause the testicles to make testosterone.

3. The hypothalamus is a gland in your brain that controls your hormone system. It releases hormones to another part of your brain called the pituitary gland, which sends hormones out to your different organs.

4. The endometrium is the inner lining of the uterus. Each month, the endometrium thickens and renews itself, preparing for pregnancy. If pregnancy doesn't occur, the endometrium sheds in a process known as menstruation. If conception takes place, the embryo implants into the endometrium.