my neighbor discovered it
1.you should ask questions such as : when was the heart discovered ? ,who discovered the heart ?, when did people hear about disease's, who was the person to find out about heart disease's had the first heart disease ?,who had the first heart attack ?
dr robert garvic
he discovered the first heart transplant
William Harvey was first to demonstrate the functions of the heart and the complete circulation of the blood,
The first beat is to push the blood out and the second is to get the blood back into the heart.
You have a heart. It beats periodically. The rate at which it does so is your heart rate. If you don't have a heart rate, then your heart isn't beating, meaning you're dead or dying.
220 minus your age. If you are 25, your max heart rate will be 195bpm.
depressants affect the heart rate by its heart rate
If your heart gets stronger:Your resting heart rate will go downYour target heart rate for exercise will go upIt will be harder to raise your heart rate to the target heart rate
Heart rate
To calculate a target heart rate for exercise, first determine the maximum heart rate by subtracting the person's age from 220. For instance, a twenty year olds maximum heart rate is 220 minus 20, or 200. The target heart rate for moderate intensity exercise is 50-70% of the maximum. This is calculated by multiplying 200 by 0.50 and by 0.70. This gives you a target heart rate range of 100-140.