The endocrine system

They Thyroid Gland

The thyroid gland is a butterfly shaped gland located at the base of the neck, below the Adam's Apple. The thyroid regulates the rate of the body's metabolism, as well as the rates of many other functions in the body, through the secretion of the hormones T3 and T4.  Diseases of the thyroid gland include:  Hypothyroidism, Hyperthyroidism, Thyroid Nodules, and Thyroid Cancer.

 These glands act as a regulator that controls the blood level of calcium. It is essential to keep the blood level of calcium under tight control.   Calcium is needed inside just about every cell in the body in order to keep that cell functioning properly. When the blood level of calcium is too high or too low this may be serious consequences

 The adrenal glands are two small structures that sit on top of the kidneys, deep in the back, behind the abdominal cavity and well beneath the back muscles. Although they are small, usually weighing about a tenth of an ounce each, they are powerful factories that make many hormones that are critically important to health and well being 

Often called the Master Gland, the pituitary gland produces the hormones that act as controllers that regulate glands in various locations in the body. Abnormalities in the pituitary can cause symptoms of hyer/hypo thyroidism, problems breast feeding for nursing mothers, low libido and erectile dysfunction, abnormal menstrual cycles and even infertility and early menopause. 

Gonads are the main reproductive organs, and include the testes in males and the ovaries in females. They are endocrine glands that are responsible
for the development of sex characteristics through the secretion of hormones. Male sex hormones are referred to as androgens, the primary hormone being testosterone. In females, the ovaries produce two types of hormones, estrogen and progesterone.

The pancreas is an endocrine gland that supports the digestive process. The pancreas manufactures and secretes several important hormones including insulin, glucagon and somatostatin. It also functions as an exocrine gland, secreting pancreatic juice that passes to the small intestine to aid in digestion.

The pancreas plays an important role in the metabolism and regulation of glucose in the bloodstream.  Both  insulin and glucagon are important in diabetes.