Give me few points about working model of heart Not procedure Just matter Don't spam I'll Report your Answers all
Answers
In this simple model the first bottle is the atrium of the heart, the second bottle is the ventricle, and the third bottle represents either the lungs or body. Our fingers function as the valves of the heart.
To make your heart model work, squeeze the middle bottle only. Start by pinching the straw between the atrium and ventricle bottle. Squeeze the middle bottle and watch your “blood” squirt out into the body.
Repeat, repeat, repeat to pump blood from the atrium, into the ventricle then out to the body!
Once your blood in the atrium gets too low, you can take blood from the “body” and add it back into the atrium. Then start again.
EXPLORING THE SCIENCE
Your heart rate is how fast your heart beats. We measure this as beats per minute. The easiest way to do this is to count how many times your heart beats in ten seconds, then multiply the number by 6 (60 seconds in a minute) to get your heart rate.
Heart rate is affected by many things. It varies by person, but also each person experiences variations in their heart rate every day. Many things can affect heart rate including age, health, activity, caffeine, sugar and more.
Keeping the middle bottle “squeezed” move your fingers and pinch the straw between the ventricle and body. Now release the middle bottle and watch your blood move from the atrium into the ventricle.
In our heart model we are exploring how blood flows in one direction through the heart chambers. We have four chambers in our heart, the right and left atrium, and right and left ventricle. Blood will flow in only one direction – into the heart, to the lungs to be oxygenated, back into the heart, then back out into the body. The four valves of our heart are important for ensuring this one way blood flow. Watch carefully as you do the work of the valves as you pinch the straws. What happens to the liquid in the straws?
We have 4 heart valves. The Tricuspid and Mitral are located between the atrium and ventricle. The Aortic and Pulmonary valves control blood flow out of the ventricles into the arteries. When you pinch the straw between the first two bottles, you are mimicking the Tricupsid or Mitral valves. When you pinch the second straw you are mimicking the Aortic or Pulmonary valves.