If Lead II's QRS Complex Is Positive,the Heart's Current Is

question 37

Multiple Choice

If Lead II's QRS complex is positive,the heart's current is traveling toward the

• A)right arm.
• B)left arm.
• C)right leg.
• D)left leg.

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Definitions:

Melatonin

A hormone produced by the pineal gland that regulates sleep-wake cycles and is involved in various biological rhythms.

Pineal Gland

The endocrine gland that secretes the hormone that controls the sleep/wakefulness cycle.

Circadian Rhythms

The natural, internal processes that regulate the sleep-wake cycle and repeat roughly every 24 hours.

Sundowning

A symptom common in some older individuals with dementia, characterized by increased confusion, agitation, and restlessness during the late afternoon or evening.