The endocrine system is a group of glands distributed throughout the human body. This group of glands secretes substances called hormones. These hormones are dumping into the bloodstream (Shier, Butler & Lewis, 2009). The endocrine system does not have a single anatomic location. It is dispersed throughout the human body. The final purpose of this process is to control, regulate, and coordinate the functioning of the human body. Some body functions can be activated or inhibited by hormones, which are secreted in very small quantities. The hormone related diseases may be due to hyper secretion, or a hypo secretion. The hormones secreted by the endocrine glands regulate growth, development and function of many tissues, and coordinate the
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The thyroid is a small gland in the neck, in front of the trachea below the larynx. Thyroid hormones control metabolism, which is the body's ability to break down food and store it for energy, and convert food waste products, releasing energy in the process. Hyperthyroidism (too much hormone) may result Grave's disease. Symptoms include anxiety, rapid heart rate, diarrhea and weight loss, nervousness, anxiety, and irritability.
The parathyroid glands are located in front of the base of the neck around the thyroid gland and secrete parathyroid hormone. Parathyroid hormone regulates blood levels of calcium and phosphorus. This hormone (parathyroid hormone) affects the bones, kidney, and intestine (Shier et al., 2009).
Adrenal glands are endocrine glands that sit atop the kidneys (Shier et al., 2009). The adrenal glands secrete hormones that increase heart rate, the force of cardiac muscle contraction, breathing rate, elevate blood pressure and blood glucose level. This activity prepares the body foe energy expending action, sometimes called fight or flight responses (Shier et al., 2009).
According to Shier, Butler & Lewis (2009) “other glands that produce hormones and thus are parts of the endocrine system include the pineal gland and the thymus gland”. Shier et al., 2009 argued the pineal gland, located deep between the cerebral hemispheres, secretes hormone melatonin that acts on certain brain regions that function as a biological clock. The changing levels