❤️ Medical Science - Heart ❤️

❤️ The Heart ❤️

Aim:  I want to create a poster to make people aware of heart attacks.

Results:

Discussion:

The heart is a four-chambered muscular organ, which is approximately the size of your fist. The heart is split into the left side and the right side this structure protects the oxygenated blood mixing with the deoxygenated blood. The right side of your heart is weaker than your left side. This is because the left side of your heart needs to pump oxygenated blood to your entire body whereas the right side needs to only pump to the lungs to be oxygenated. Oxygenated blood is a brighter red than deoxygenated blood.

What Are Arteries & Veins:

Arteries and veins are blood vessels that carry blood to the body. Arteries carry oxygenated blood away from the heart ( except the pulmonary artery ) and veins carry deoxygenated blood back to the heart (except the pulmonary vein ). Arteries have thick, elastic and muscular walls whereas veins have thin walls. Arteries appear red when viewed through the skin and veins appear blue. Blood flows through the arteries under high pressure and arteries have no valves on the other hand veins carry blood which is under low pressure and they have valves. Arteries and veins are connected by smaller vessels called capillaries. 

How The Heart Works:

Deoxygenated blood returns to the heart after circulating through the body. It then enters into the right side which contains the right atrium and the right ventricle. The right atrium pumps blood into the right ventricle through the tricuspid valves. Then the blood is collected and pumped into the lungs via the pulmonary arteries. The Lungs restore the blood with oxygen ( oxygenated blood ). Oxygenated blood enters the left side of the heart which contains the left atrium and left ventricle. The blood is pumped into the left atrium and then into the left ventricle via the mitral valve. Next, the oxygenated blood is pumped out of the left ventricle into the aorta via the aortic valve and to the rest of the body. 

Valves & Contraction:
There are four valves in our heart which keep the blood moving the correct way. The tricuspid valve, mitral valve, pulmonary valve and the aortic valve. These valves only open one way to let the blood flow forward, then it is closed so the blood doesn't go backward.  Each valve opens and closes once per heartbeat. Your heart contracts and relaxes. Contraction is called systole and relaxing is called diastole. During systole, your ventricles contract and which forces blood into your lungs and body. However, during diastole, your ventricles relax and are filled with blood coming from the upper chambers the left and right atria. Then the cycle starts again. 

Heart Attack?

Evaluation:
This is my poster about heart attacks. It's pretty simple and straight forward. However, if I was to do this again I would make the poster with larger paper such as A3 to add more information and pictures. I would also make the poster a bit more eye-catching using bolder colours. If someone else was to create a similar poster like this then I would recommend using these ideas. I enjoyed learning about the heart and heart attacks. This makes me want to research more, such as what's a hole in the heart? What is angina? What does plaque look like (realistically)? I would also want to find out more about the evolution of the human heart

Facts:

- Your heart beats about 100,000 times a day.

- Injections go into a vein because they have a thinner wall than arteries which is easier to get the needle into. Veins also carry blood which is under low pressure, this makes the blood easier to handle.

- Your heart is approximately the size of your fist.

- The beating sound of your heart is caused by the valves opening and closing.

- Laughing is good for your heart.

- Women's heart beats slightly faster than a mans.

- The heart pumps blood to every part of your body, except the cornea ( outer barrier of your eye ).