Heart dissection
1. External appearance: The heart is squishy and muscular, but there is fat surrounding the top of the heart and the coronary arteries. This fat is creamy-white and quite hard. I can identify the coronary arteries on the outside of the heart and the main blood vessels on the top of the heart (aorta, vena cava, etc).
1. External appearance: The heart is squishy and muscular, but there is fat surrounding the top of the heart and the coronary arteries. This fat is creamy-white and quite hard. I can identify the coronary arteries on the outside of the heart and the main blood vessels on the top of the heart (aorta, vena cava, etc).
3. The coronary arteries are dark red and surrounded by white fat. If these arteries were to be blocked, the heart muscle would fie and you could suffer something like a heart attack. This is because the coronary arteries supply blood to the heart muscle itself so that it can pump.
4. You can tell which side is which because the front of the heart has four distinctive chambers and has coronary arteries. From that, you can tell the left and right sides - the left side is on the left side of your body and the right is on the right.
5. The muscles at the top of the heart are fairly thin, whereas the muscles at the bottom of the heart are thicker. There is a good amount of fat on the heart, around the top of the heart and surrounding the coronary arteries. Major vessels entering and exiting the heart are the vena cava (superior and inferior), pulmonary artery, pulmonary vein and aorta. They vary in thickness- the one with the thickest muscles is the aorta. The aorta takes oxygenated blood to the body to be used.
6. Deoxygenated blood leaves the right ventricle in an artery and travels to the lungs. Here,the blood collects oxygen, so it is now oxygenated. The blood travels back to the heart via a vein.
7. The aorta needs to be thick because it needs to pump a lot of blood outwards (up to the rest of the body) and has to be muscular in order to resist gravity.
8. The vena cava does not need to be as strong as the aorta because it is receiving blood rather than pumping it out. The vena cava goes back into the right atrium. The blood in the vena cava would eventually end up in the pulmonary artery that leads to the lungs.
9. When water was flowing into the pulmonary vein, it came out of the aorta.
4. You can tell which side is which because the front of the heart has four distinctive chambers and has coronary arteries. From that, you can tell the left and right sides - the left side is on the left side of your body and the right is on the right.
5. The muscles at the top of the heart are fairly thin, whereas the muscles at the bottom of the heart are thicker. There is a good amount of fat on the heart, around the top of the heart and surrounding the coronary arteries. Major vessels entering and exiting the heart are the vena cava (superior and inferior), pulmonary artery, pulmonary vein and aorta. They vary in thickness- the one with the thickest muscles is the aorta. The aorta takes oxygenated blood to the body to be used.
6. Deoxygenated blood leaves the right ventricle in an artery and travels to the lungs. Here,the blood collects oxygen, so it is now oxygenated. The blood travels back to the heart via a vein.
7. The aorta needs to be thick because it needs to pump a lot of blood outwards (up to the rest of the body) and has to be muscular in order to resist gravity.
8. The vena cava does not need to be as strong as the aorta because it is receiving blood rather than pumping it out. The vena cava goes back into the right atrium. The blood in the vena cava would eventually end up in the pulmonary artery that leads to the lungs.
9. When water was flowing into the pulmonary vein, it came out of the aorta.
10. Inside the left side of the heart, I can see the muscular walls of the heart, the valves, the left ventricle, the left atrium, the aorta and the pulmonary vein. The job of the valves is to prevent backflow into the heart. The aorta has thick muscles around it.
The walls of the ventricles are thicker than the walls of the atrium. This is because the atrium receives blood rather than having to pump it out and does not need to be as strong. The left ventricle is thicker than the right ventricle. This is because the aorta moves blood to the body rather than the lungs, and the lungs are closer to the heart than the body. The muscle that separates the two sides of the heart is called the septum. It is very thin because it does not have to be thick for any purpose - it is not used to move blood. The left side of the heart has larger chambers - it has to pump blood to the whole body, rather than the right side, which just pumps to the lungs.
I was not here for the 'walking the heart' activity.
The walls of the ventricles are thicker than the walls of the atrium. This is because the atrium receives blood rather than having to pump it out and does not need to be as strong. The left ventricle is thicker than the right ventricle. This is because the aorta moves blood to the body rather than the lungs, and the lungs are closer to the heart than the body. The muscle that separates the two sides of the heart is called the septum. It is very thin because it does not have to be thick for any purpose - it is not used to move blood. The left side of the heart has larger chambers - it has to pump blood to the whole body, rather than the right side, which just pumps to the lungs.
I was not here for the 'walking the heart' activity.