An Increase in Parathyroid Hormone Levels Results in

question 26

Multiple Choice

An increase in parathyroid hormone levels results in

• A)increased rate of bone resorption.
• B)increased rate of vitamin D degradation.
• C)increased concentration of potassium ions in the urine.
• D)increased rate of calcium ion excretion by the kidneys.
• E)decreased levels of blood calcium.

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Definitions:

Local Potentials

Electrical changes in neurons that are confined to a small region, serving as the initial response to stimuli, potentially leading to action potentials.

Membrane Potential

The voltage difference across a cell's plasma membrane due to the differential distribution of ions.

Hyperpolarized

Hyperpolarized refers to a state where a cell's membrane potential is more negative than its normal resting potential, often making the cell less active.

Stimulus Strength

The magnitude or intensity of a stimulus that influences the degree of response of a biological system.