What stimulates the release of parathyroid hormone (PTH)?
hypercalcemia
cold temperatures
hypocalcemia
low basal metabolic rate
The Correct Answer is C
a) Hypercalcemia: High calcium levels inhibit PTH secretion via negative feedback.
b) Cold temperatures: PTH release is not influenced by ambient temperature.
c) Hypocalcemia: Low calcium levels stimulate the parathyroid glands to release PTH to increase calcium concentration.
d) Low basal metabolic rate: This relates more to thyroid hormone activity than to calcium regulation.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is C
Explanation
a) Triiodothyronine (T3) and thyroxine (T4) production continues uninterrupted.
Iodinated thyroglobulin is essential for producing T3 and T4.
b) Excess triiodothyronine (T3) and thyroxine (T4) hormones are produced.
A lack of iodinated thyroglobulin leads to decreased production.
c) Less triiodothyronine (T3) and thyroxine (T4) hormones are produced.
Without iodinated thyroglobulin, the thyroid cannot synthesize sufficient T3 and T4, leading to hypothyroidism.
d) Less thyroid-stimulating hormone (TSH) is released.
TSH levels would actually increase due to lack of negative feedback from low T3 and T4 levels.
Correct Answer is C,B,A
No explanation
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