Where do i go to on my computer to write a letter and then print it out. Sorry but i'm only starting recently to understand some things about my computer so i'm asking.here do i go to on my computer to write a letter and then print it out. Sorry but i'm only starting recently to understand some things about my computer so i'm asking.
A scientist by the name of Francis Arthur Bainbridge reported this reflex in 1915 when he was experimenting on dogs. Bainbridge found that infusing blood or saline into the animal increased heart rate. This phenomenon occurred even if arterial blood pressure did not increase.
How Other Factors Affect Heart Rate. 1  Air temperature: When temperatures (and the humidity) soar, the heart pumps a little more blood, so your pulse rate may increase, but usually no more than five to 10 beats a minute. 2  Body position: Resting, sitting or standing, your pulse is usually the same.