Which of these speeds up heart rate?

Which of these speeds up heart rate?

ان میں سے کون دل کی دھڑکن کو تیز کرتا ہے؟
Explanation
  • Epinephrine is also known as adrenaline.
  • It is a hormone that increases heart rate as part of the body's "fight or flight" response.
  • It stimulates the heart to beat faster, enhancing the body's ability to respond to stress.