Multiple Choice
Pacemaker cells isolated from the SA node generate action potentials at approximately how many beats per minute?
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14. The Autonomic Nervous System
Introduction to the Autonomic Nervous System
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Join thousands of students who trust us to help them ace their exams!Watch the first videoMultiple Choice
A rapid, irregular heartbeat is a symptom of which of the following conditions?
A
Bradycardia
B
Hypertension
C
Syncope
D
Arrhythmia
Verified step by step guidance1
Step 1: Understand the term 'Arrhythmia'. Arrhythmia refers to an irregular or abnormal rhythm of the heart, which can manifest as a rapid heartbeat (tachycardia), a slow heartbeat (bradycardia), or other irregular patterns.
Step 2: Analyze the symptom described in the problem: 'rapid, irregular heartbeat'. This symptom aligns with the definition of arrhythmia, as it indicates an abnormal heart rhythm.
Step 3: Review the other options provided: Bradycardia refers to a slow heart rate, Hypertension refers to high blood pressure, and Syncope refers to fainting or temporary loss of consciousness. None of these conditions directly describe a rapid, irregular heartbeat.
Step 4: Match the symptom to the correct condition. Since 'rapid, irregular heartbeat' is a hallmark symptom of arrhythmia, it is the most appropriate answer.
Step 5: Conclude that the correct answer is 'Arrhythmia' based on the alignment of the symptom with the definition of the condition.
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