During the cardiac cycle, heart sounds correlate with events of the cycle. Which is being associated with systole?

Answer and Explanation

The Correct Answer is B

A. S2: This sound, also known as "dub," occurs during diastole when the semilunar valves close.

B. S1: This sound, also known as "lub," occurs during systole when the atrioventricular valves close, marking the beginning of systole.

C. S4: This sound is an abnormal heart sound associated with late diastole, not systole.

D. S3: This sound is associated with early diastole and is typically related to rapid ventricular filling, not systole.

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Correct Answer is B

Explanation

A. Facial, Trigeminal, Vestibulocochlear: The Facial nerve (VII) controls facial expressions, the Trigeminal nerve (V) is involved in facial sensation, and the Vestibulocochlear nerve (VIII) handles hearing and balance, none of which are directly related to eye movements.

B. Oculomotor, Trochlear, and Abducens: The Oculomotor nerve (III) controls most eye movements, the Trochlear nerve (IV) controls the superior oblique muscle for downward and outward movements, and the Abducens nerve (VI) controls the lateral rectus muscle for lateral eye movement.

C. Spinal Accessory, Facial, Trigeminal: The Spinal Accessory nerve (XI) controls neck and shoulder movements, while the Facial nerve (VII) and Trigeminal nerve (V) are not involved in eye movements.

D. Glossopharyngeal, Vagus, Hypoglossal: The Glossopharyngeal nerve (IX) is involved in taste and salivation, the Vagus nerve (X) affects parasympathetic functions, and the Hypoglossal nerve (XII) controls tongue movements, none of which are related to eye movements.

A. Moist nasal mucosa B. Cerumen in the ear C. Enlarged lymph node in the neck D. Acne lesions on the face and upper chest

Correct Answer is C

Explanation

A. Moist nasal mucosa: This is generally a normal finding and does not usually require immediate follow-up unless there are other symptoms suggesting infection or other issues.

B. Cerumen in the ear: While cerumen can impact hearing, it is typically not an urgent issue and can be managed with appropriate ear care.

C. Enlarged lymph node in the neck: Enlarged lymph nodes can indicate an underlying infection or malignancy, especially if persistent or accompanied by other symptoms, thus requiring immediate follow-up.

D. Acne lesions on the face and upper chest: Acne is common and usually not an urgent concern unless it is severe or causing significant distress.

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During the cardiac cycle, heart sounds correlate with events of the cycle. Which is being associated with systole?

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Naxlex Comprehensive Predictor Exams

Cranial nerves involved in eye movements are:

Correct Answer is B

Explanation

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Correct Answer is C

Explanation

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