A Laboratory Test Result That Helps Confirm the Diagnosis of Systemic

question 18

Multiple Choice

A laboratory test result that helps confirm the diagnosis of systemic lupus erythematosus (SLE) is

• A) elevated serum calcium level.
• B) elevated monoclonal antibody titer.
• C) positive antinuclear antibodies.
• D) positive microsomal antibodies.

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Definitions:

Electrical Impulse

A sudden surge of electricity through a conductor, often used in reference to the rapid transmission of signals within nerves.

Neurotransmitters

Chemicals within the nervous system that transmit signals from one neuron to another across synapses.

Action Potential

A short-lasting event in which the electrical membrane potential of a cell rapidly rises and falls, allowing neurons to transmit signals along the nerve.

Resting Potential

The electric potential difference across the membrane of a neuron at rest, critical for the transmission of nerve impulses.