16 Questions
What is the primary role of Parathyroid hormone (PTH)?
Preserving calcium within normal range
Which disorder is characterized by the presence of a functioning parathyroid adenoma and phosphaturia?
Primary hyperparathyroidism
What is a common cause of secondary hyperparathyroidism?
Decreased serum calcium
In hypoparathyroidism, what is a common post-surgical cause that leads to accidental injury to the parathyroid glands?
Autoimmune parathyroid destruction
What is a common laboratory result associated with primary hyperparathyroidism?
Hypercalcemia
How does Parathyroid hormone indirectly stimulate intestinal absorption of calcium?
By stimulating conversion of inactive Vitamin D to activated Vitamin D3
What is the primary role of Parathyroid hormone (PTH)?
Preserves calcium and phosphate within normal range
What is the main cause of primary hyperparathyroidism leading to hypercalcemia?
Presence of a functioning parathyroid adenoma
Which of the following is a characteristic of secondary hyperparathyroidism?
Diffused hyperplasia of all 4 parathyroid glands
What is the primary effect of Parathyroid hormone on bone?
Increases bone resorption
What is a common laboratory result associated with tertiary hyperparathyroidism?
Calcium phosphates precipitate in soft tissues
In hypoparathyroidism, what does a patient often become dependent on for calcium supplementation?
Vitamin D injections
What is a key feature of secondary hyperparathyroidism?
Decreased serum calcium response
What happens to phosphates in cases of tertiary hyperparathyroidism?
Precipitate in soft tissues
What result would be expected in primary hyperparathyroidism when checking ionized calcium levels?
Increased levels
What is the consequence of undetected primary hyperparathyroidism?
Severe demineralization that may lead to osteitis fibrosa cystica
Test your knowledge on the parathyroid gland and hormone. Learn about the location of the parathyroid gland, its anatomical features, the secretion of parathyroid hormone, and its primary role in calcium homeostasis.
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