Thyroid diagram. The below diagram depicts thyroid gland and larynx. Thyroid is an endocrine gland located in the head and neck. The thyroid gland and parathyroid glands are a group of endocrine glands located in the base of the neck below Adam’s apple. Thyroid consists of two lobes connected by an isthmus.
Thyroid produces thyroid hormones, which influence the metabolic rate and protein synthesis. These hormones also impact numerous areas of development and overall person’s well-being. Thyroid hormones, T3 and T4, are synthesized from iodine and tyrosine. In addition, the thyroid makes calcitonin, a hormone that participates in calcium homeostasis.