Question

In: Anatomy and Physiology

Which endocrine organs are responsible for regulating blood calcium levels?

Which endocrine organs are responsible for regulating blood calcium levels?

Solutions

Expert Solution

The following endocrine organs balance and work in coordination inorder to regulate calcium levels in blood:

PARATHYROID GLANDS: It realeases a hormone called Parathormone(PTH).It increases blood calcium levels by following ways-

  • By increasing the activity of osteoclasts in bones.This leads to bone demineralization and release of calcium from bones into blood.
  • By increasing reabsorption of calcium from intestines
  • By reabsorption of calcium from kidneys

THYROID GLANDS: They secrete a hormone called calcitonin from parafollicular cells.It works opposite to PTH in following manner-

  • It decreases the osteoclasts activity helps in bone formation.
  • It increases excretion of calcium from urine.

CALCITRIOL: It is the active form of vitamin D,formed in kidneys. It has following effects-

  • It increases absorption of calcium from intestines
  • It causes remineralization of bones by transferring calcium from blood to bones.

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