Endocrine system

Glandular cells, tissues, and organs make up the endocrine system whose products (hormones) enhance the functions of the nervous network. The endocrine system includes the pituitary and pineal glands; the hypothalamus, thyroid, and adrenal glands; the pancreas; and the testes or ovaries and placenta.

One important function of the endocrine system is to maintain homeostasis, that is, a constancy of the internal environment of an organism. The cells of this network are writers. They compose messages called hormones, which are distributed primarily through the bloodstream.

There are two types of hormones releases: steroidal and non-steroidal (protein based). Glands perform the same job as the nervous network: communication, integration, and control of bodily functions. The signals travel slower but are much longer lasting. Hormones are the main regulators of metabolism, growth and development, and reproduction.

Diseases of the endocrine system result from overproduction or underproduction of a hormone. Disease could also result from an abnormal response to a hormone. Here are a few examples:

• Germ cell cancers?these include testicular cancer and ovarian cancer
• Diabetes
• Pancreatic cancer
• Thyroid cancer

When cancer occurs in this network, symptoms are often felt at distant locations. For example, ovarian cancer may cause shortness of breath. These diseases can be very serious, it is important to visit with you doctor if you feel you are at risk.