Thyroid disease occurs when the thyroid gland, located at the front of the neck, produces either too many or too few hormones. Some common disorders of the thyroid include hyperthyroidism, hypothyroidism, thyroid nodules... More » Science Human Anatomy Glands & Hormones

Thyroid disease is caused by the overproduction or underproduction of the thyroid hormones, according to WebMD. Overproduction is known as hyperthyroidism, while underproduction is known as hypothyroidism. Both types of ... More » Health Conditions & Diseases

The common symptoms of an underactive thyroid, or hypothyroidism, include weight gain, muscle weakness, constipation, fatigue and depression, according to the Office on Women's Health. The symptoms of an overactive thyro... More » Health Conditions & Diseases
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The thyroid gland plays a major role in the human body's everyday functions by secreting hormones that control metabolism, according to Harvard Medical School. Because the thyroid gland produces the substances that influ... More » Science Human Anatomy Glands & Hormones

One gland that's located in the neck is the thyroid gland, according to MedicineNet. This a gland that produces hormones that control the body's metabolism, including the heart rate, temperature and blood pressure. Thyro... More » Science Human Anatomy Glands & Hormones

The parathyroid glands are four small glands situated behind the thyroid gland in the neck. These glands control calcium levels in the blood and bones. More » Science Human Anatomy Glands & Hormones

The thyroid gland is located in the neck. It is wrapped around the front of the windpipe, just below the Adam's apple. It is often described as butterfly-shaped because it is made up of two wing-like lobes and a small co... More » Science Human Anatomy Glands & Hormones