Calcium Homeostasis. By Dr. Khurram Irshad Department of Physiology. Calcium Homeostasis Key Players 1. Parathyroid Hormone 2. Calcitonin 3. and Vitamin D3. Calcium homeostasis. Key Organs Involved Parathyroid Gland Intestines Bone Kidneys And Skin.
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Dr. Khurram Irshad
Key Organs Involved
Ca2+ normally ranges from 8.5-10 mg/dL in the plasma.(9.4 mg/dL or 2.4 mmol/L)
Note the marked loss of trabeculae with preservation of cortex.
Parathyroid Hormone is essential for life
Calcitonin plays a role in skeletal integrity in pregnancy or breast feeding
Gastrointestinal hormonesNegative feed back loops
See Nutrition 2000 Vol 16 (7/8) in particular:
Tapping the facial nerve at the angle of jaw in a patient with moderate hyposecretion of a particular hormone elicits a characteristic grimace on that side of the face. Which endocrine abnormality could give rise to this so called ‘Chvostek sign’ ?