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Which of the following factors can increase heart rate?

Practice Questions

Q1
Which of the following factors can increase heart rate?
  1. Increased parasympathetic activity
  2. Increased sympathetic activity
  3. Decreased body temperature
  4. Increased blood viscosity

Questions & Step-by-Step Solutions

Which of the following factors can increase heart rate?
  • Step 1: Understand that the heart rate is how fast your heart beats.
  • Step 2: Know that there are two main parts of the nervous system that affect heart rate: sympathetic and parasympathetic.
  • Step 3: Recognize that sympathetic activity is like a 'gas pedal' for the heart; it makes the heart beat faster.
  • Step 4: Realize that parasympathetic activity is like a 'brake'; it slows down the heart rate.
  • Step 5: Identify factors that can increase sympathetic activity, such as exercise, stress, or excitement.
  • Step 6: Conclude that when sympathetic activity increases, heart rate goes up.
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