In sinus arrhythmia,the heart rate
A)Speeds up during inspiration and expiration.
B)Speeds up during inspiration,slows during expiration.
C)Slows during inspiration and expiration.
D)Slows during inspiration,speeds up during expiration.

Question

Quizplus · Accepted Answer

Sinus arrhythmia is a normal physiological phenomenon where the heart rate increases during inspiration and decreases during expiration. This is due to changes in autonomic nervous system activity during the breathing cycle.

In Sinus Arrhythmia,the Heart Rate