NEET (NTA)-National Eligibility cum Entrance Test (Medical) Biology Human Physiology-Neural Control and Coordination Revision (Page 5 of 17)

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Hormone of Parathyroid Gland

Origin; they develop from endoderm of the embryo

Location; are two pairs of glands (four glands) located on the posterior surface of the lobes of the thyroid gland.

Image showing the location of parathyroid gland

Image Showing the Location of Parathyroid Gland

Image of location of parathyroid gland

Structure; each gland consists of densely packed cords of epithelial cells well supplied with blood vessels.

Hormone; the epithelial cells of parathyroid glands secrete a hormone called parathormone (also called Collip’s hormone aft

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Disorders of Parathyroid gland

  • Hypoparathyroidism (deficiency of parathormone) causes lowering of blood glucose level. This increases the excitability of nerves and muscles). Sustained contractions (tetany) of muscles of larynx, face, hands and feet are produced. This disease is called parathyroid tetany.
Image showinh the Hypoparathyroidism

Image Showinh the Hypoparathyroidism

Image of Hypoparathyroidism

  • Hyperparathyroidism (excess of parathormone) because of its osteoclstic activity it causes break down (osteoporosis) of bones and bones become so

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