Decreased production of parathyroid leads to:
Correct answer: C. Decrease in calcium levels
- A. Increase in calcium levels
- B. Increase in vitamin B12
- C. Decrease in calcium levels
- D. Decrease in vitamin B12
Explanation
Decreased production of parathyroid hormone (PTH) from the parathyroid glands leads to reduced calcium reabsorption from the kidneys and intestines, and diminished calcium release from bones, causing a fall in blood calcium levels.
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Coordination depends on receptors, neurons, synapses and nerve impulses, with reflex actions traced through the reflex arc and the roles of major brain regions. Chemical coordination covers endocrine glands and hormones, including how hormones regulate growth, metabolism, reproduction and internal balance, unlike rapid nervous control.
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