Interesting at Least to Me

Yesterday at my study group for Anatomy and Physiology, the professor sat with us and answered any questions that we had. One lady said that she was having a hard time figuring out how to calculate the stroke volume (SV), heart rate (HR), and cardiac output (CO) (all from the heart of course). He had us take our own pulse (heart rate) then we converted our weight to kilograms and times that by .07 (at least 7 % body weight is blood). After we did that we had CO and HR. The equation is CO=HR*SV. So we took CO/HR to get SV. I'll give you my numbers .59/100=0.059 Liters per heart beat (The amount the heart actually pumps out). We then converted that to milliliters which came out to be 59mL. Now picture a 20 oz bottle for pop or water. The amount of fluid in that bottle in milliliters is 591. So my heart pumps that whole amount after 10 beats.

Sorry if this was boring to you but it was very interesting to me. I just love knowing how the body works - especially my body.