An abnormally slow heart rate, below 60 beats per minute is called:

tachycardia

tachypnea

Bradycardia

Apnea

Answer and Explanation

The Correct Answer is C

A. Tachycardia. – Tachycardia refers to a heart rate above 100 beats per minute, not a slow heart rate.

B. Tachypnea. – Tachypnea describes rapid breathing, not a slow heart rate.

C. Bradycardia. – Bradycardia is a heart rate below 60 beats per minute. It may be normal in athletes but can indicate conduction abnormalities or medication effects in other individuals.

D. Apnea. – Apnea is the absence of breathing, not a slow heart rate.

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Correct Answer is C

Explanation

A. Opening of the AV valves – The AV (atrioventricular) valves open silently during diastole; they do not create the "lub" sound.

B. Closing of the semilunar valves – The closing of the semilunar valves (aortic and pulmonary) produces the "dupp" sound, not the "lub."

C. Closing of the AV valves – The first heart sound (S1), or "lub," occurs when the mitral and tricuspid (AV) valves close at the beginning of systole.

D. Opening of the semilunar valves – The semilunar valves open silently during ventricular contraction; they do not produce the "lub" sound.

A. is a protective response B. is a disease process C. produces tissue damage D. is a result of bacteria

Correct Answer is A

Explanation

A. Is a protective response – Inflammation is a natural immune response that helps contain injury and promote healing, regardless of infection.

B. Is a disease process – Inflammation itself is not a disease; it is a response to injury, infection, or irritation.

C. Produces tissue damage – While excessive or chronic inflammation can cause tissue damage, inflammation itself is not inherently destructive.

D. Is a result of bacteria – Inflammation can be caused by bacteria, viruses, trauma, or autoimmune conditions, not just bacterial infection.

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An abnormally slow heart rate, below 60 beats per minute is called:

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Naxlex Comprehensive Predictor Exams

Auscultation of the heart sounds will result in a lubb-dupp sound when using the bell and the diaphragm of the stethoscope. The lub part of the sound is caused by the:

Correct Answer is C

Explanation

Although the signs and symptoms of both infection and inflammation include erythema, edema, and pain, the major difference is that inflammation:

Correct Answer is A

Explanation

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An abnormally slow heart rate, below 60 beats per minute is called:

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