Which hormone is secreted in response to low levels of calcium in the bloodstream?
Thyroid hormone
Parathyroid hormone
Calcitonin
Vasopressin
The Correct Answer is B
Parathyroid hormone (PTH) is a hormone produced by the parathyroid glands, which are located behind the thyroid gland in the neck. PTH regulates the calcium levels in the blood by stimulating the release of calcium from the bones, increasing the absorption of calcium from the intestines, and decreasing the excretion of calcium from the kidneys. When the calcium levels in the blood are low, PTH is secreted to raise them back to normal.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is D
Explanation
A thrombus is a blood clot that forms inside a blood vessel or the heart, which can obstruct blood flow and cause complications such as ischemia or embolism. One of the factors that predispose thrombus formation is stasis of blood flow, which means slow or stagnant movement of blood in a vessel or chamber, which can allow platelets and fibrin to accumulate and form a clot.
Correct Answer is C
Explanation
A cerebral concussion is a mild traumatic brain injury that occurs when a blow to the head causes the brain to move rapidly inside the skull, resulting in temporary changes in brain function. A concussion can cause confusion, memory loss, impaired concentration, dizziness, headache, nausea, blurred vision, and mood changes. Most concussions resolve within a few days or weeks with rest and monitoring.
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