PHY-C Bone and PTH Physiology Quiz

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What is the main physiological effect of hypercalcemia on the nervous system?

Depression of the nervous system

How does an increase in calcium concentration affect the activity of PTH?

Decreases the activity of PTH

What is the primary role of calcitonin in calcium regulation?

Decrease calcium levels in the blood

What is the function of the calcium-sensing receptor located in the parathyroid cell membranes?

<p>Inhibit PTH production</p> Signup and view all the answers

What physiological processes does calcium play a key role in?

<p>Muscle contraction and nerve function</p> Signup and view all the answers

How does hypercalcemia affect the nervous system?

<p>It depresses the nervous system</p> Signup and view all the answers

What is the normal value of calcium in millimoles per liter?

<p>2.4 mmol/L</p> Signup and view all the answers

How does an increase in calcium concentration affect the activity of PTH?

<p>It decreases the activity of PTH</p> Signup and view all the answers

What is the role of Calcitonin in calcium regulation?

<p>Inhibits bone resorption, decreasing calcium levels in the bloodstream</p> Signup and view all the answers

How does the body detect changes in extracellular fluid calcium ion concentrations?

<p>Using a receptor called the calcium-sensing receptor</p> Signup and view all the answers

In what scenario does PTH play a role in altering calcium levels?

<p>Increased activity of PTH</p> Signup and view all the answers

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