6 Tutorials that teach Organs of the Endocrine System/Órganos del Sistema Endocrino
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Organs of the Endocrine System/Órganos del Sistema Endocrino

Organs of the Endocrine System/Órganos del Sistema Endocrino


This lesson will describe the organs associated with the endocrine system and will give descriptions of the hormones they are responsible for secreting.

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Esta lección será un breve resumen de los distintos órganos asociados con el sistema endocrino, y las hormonas que secretan.

Terms to Know
  • Adrenal Glands

    Located on top of the kidneys, the adrenal glands have two anatomic divisions: the renal cortex and the renal medulla. The renal cortex secretes hormones that regulate body mineral levels, metabolism, and aid in the production of sex hormones. The adrenal medulla releases hormones called catecholamines (adrenaline) that elevate our metabolism in response to stress.

  • Hypothalamus

    An area of the cerebrum that is located below the thalamus that controls that activity of the pituitary gland.

  • Ovaries

    The primary sex organs of females and are their primary source of estrogen and progesterone; the ovaries are also where the female gamete (ova/eggs) are matured and released from.

  • Pancreas

    A mixed gland (both endocrine and exocrine); the endocrine functions of the pancreas are to secrete insulin and glucagon to regulate blood glucose levels.

  • Parathyroid Glands

    A group of glands on the posterior thyroid that secrete parathyroid hormone to increase blood calcium levels by decreasing renal excretion of calcium and increasing osteoclast activity.

  • Pineal Gland

    A gland located in the cerebrum that secretes melatonin, an important hormone for regulating sleep/wake cycles.

  • Pituitary Gland

    Called the “master gland” because of its effects on other glands; endocrine hormones increase activity/secretion of many major glands of the endocrine system.

  • Testes

    The primary sex organs of males and are their primary source of testosterone; the testes are also where the male gamete (sperm) is produced and matured.

  • Thymus Gland

    A gland located in the mediastinum above the heart that secretes thymosins that regulate immune activity.

  • Thyroid Gland

    The largest endocrine gland located on the anterior trachea, the thyroid gland secretes hormones that elevate basal metabolic rate (BMR) called T₃ and T₄. The thyroid gland also secretes a hormone called calcitonin that lowers blood calcium levels by increasing renal excretion of calcium and inhibiting osteoclasts.