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Endocrine glands
URL of this page: //medlineplus.gov/ency/article/002351.htm

Endocrine glands

Endocrine glands release (secrete) hormones into the bloodstream.

The endocrine glands include:

  • Adrenal
  • Hypothalamus
  • Islets of Langerhans in the pancreas
  • Ovaries
  • Parathyroid
  • Pineal
  • Pituitary
  • Testes
  • Thyroid
Endocrine glandsWatch this video about:Endocrine glands

Information

Hypersecretion is when an excess of one or more hormone is secreted from a gland. Hyposecretion is when the amount of hormones that are released is too low.

There are many types of disorders that can result when too much or too little of a hormone is released.

Disorders that may be associated with abnormal hormone product from a particular gland include:

Adrenal:

  • Addison disease
  • Adrenogenital syndrome or adrenocortical hyperplasia
  • Cushing syndrome
  • Pheochromocytoma

Pancreas:

  • Diabetes mellitus
  • Hypoglycemia

Parathyroid:

  • Low blood calcium level
  • Tetany (abnormal cramping of muscles)
  • Renal calculi (kidney stones)
  • Excessive loss of minerals from bone (osteoporosis)

Pituitary:

  • Growth hormone deficiency
  • Acromegaly
  • Gigantism
  • Diabetes insipidus
  • Cushing disease
Pituitary glandWatch this video about:Pituitary gland

Testes and ovaries:

  • Lack of sex development (unclear genitalia)

Thyroid:

  • Congenital hypothyroidism
  • Myxedema
  • Goiter
  • Thyrotoxicosis

Images

  • Endocrine glandsEndocrine glands
  • Brain-thyroid linkBrain-thyroid link

References

Barrett EJ. Organization of endocrine control. In: Boron WF, Boulpaep EL, eds. Medical Physiology. 3rd ed. Philadelphia, PA: Elsevier; 2017:chap 47.

Melmed S, Auchus RJ, Goldfine AB, et al. Principles of endocrinology. In: Melmed S, Auchus RJ, Goldfine AB, Koenig RJ, Rosen CJ, eds. Williams Textbook of Endocrinology. 14th ed. Philadelphia, PA: Elsevier; 2020:chap 1.

Newell-Price JDC, Gibb FW. Endocrinology. In: Penman ID, Ralston SH, Strachan MWJ, Hobson RP, eds. Davidson's Principles and Practice of Medicine. 24th ed. Philadelphia, PA: Elsevier; 2023:chap 20.

Review Date 5/12/2023

Updated by: Sandeep K. Dhaliwal, MD, board-certified in Diabetes, Endocrinology, and Metabolism, Springfield, VA. Also reviewed by David C. Dugdale, MD, Medical Director, Brenda Conaway, Editorial Director, and the A.D.A.M. Editorial team.

Related MedlinePlus Health Topics

  • Endocrine Diseases

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06/01/2028

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The information provided herein should not be used during any medical emergency or for the diagnosis or treatment of any medical condition. A licensed medical professional should be consulted for diagnosis and treatment of any and all medical conditions. Links to other sites are provided for information only – they do not constitute endorsements of those other sites. No warranty of any kind, either expressed or implied, is made as to the accuracy, reliability, timeliness, or correctness of any translations made by a third-party service of the information provided herein into any other language. © 1997-2025 A.D.A.M., a business unit of Ebix, Inc. Any duplication or distribution of the information contained herein is strictly prohibited.

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