0
Blood can enter the heart through either the superior or inferior vena cava. After this, it enters the right atrium, passes through the tricuspid valve, enters the right ventricle, and passes through the pulmonary valve and into the pulmonary artery. From there, it enters the lungs, become oxygenated, and reenters the heart by way of the pulmonary veins. It goes into the left atrium, passes through the mitral valve, and enters the left ventricle. Next it passes through the aortic valve, enters the aorta, and it is then pumped through the rest of the body.
Still curious? Ask our experts.
Chat with our AI personalities
Ezra
Maxine
Vivi- The heart is a muscular organ that pumps blood to all parts of the body.
- The heart consists of 4 chambers. These are: Left and right atrium (small chambers at the top of the heart) and the left and right ventricles (larger chambers at the bottom of the heart). Note: The left ventricle is stronger than the right; this is because the left ventricle pumps blood to ALL parts of the body and the other side pumps blood to the lungs only.
- When the heart contracts (also known as systole), blood is forced out of the heart and flows through the blood vessels (veins/arteries/capilliaries) to all parts of the body (including the lungs).
- During systole, the right side pumps blood (low in oxygen) to the 2 lungs through the (left and right) pulmonrary arteries. This blood (now rich in oxygen after entering the lungs) returns to the heart and this time it enters the left atrium and then flows into the left ventricle. The blood then is forced out of the heart through the Aorta (the main blood vessel at the top of the heart) and is pumped to all parts of the body (except the lungs) when systole occurs.
- At the same time (while the above steps are happening), blood in the right side of the heart is pumped to the lungs during systole. As mentioned above, the blood goes from the lungs and enters the left atrium (via the pulmonrary veins).
Other notes:
Diastole: The time when the heart is relaxed (or not contracting or pumping). In other words, the time when the heart is at rest (very short period of time).
The average pulse rate for an adult is 72 beats per min.
Add your answer:
Earn +20 pts
What is the function of the blood vessels on the outer wall of the heart?
Nutrients and oxygen have to get to the outside of the heart. So the blood vessels on the outside have that job. The nutrients and oxygen can't get to the cardiac muscle from inside the heart. Blood vessels that lead from the heart that are high in oxygen and nutrients have their first branch off the aorta that goes to these blood vessels. That's how important these vessels are to the heart and how it functions.
What usually carries blood away from the heart?
veinsAnswerArteries are the blood vessels that carry blood away from the heart, not veins. Veins are the blood vessels that carry blood towards the heart. The only exceptions being the pulmonary and umbilical veins, both of which carry oxygenated blood.
What cause the blood to flow through the blood vessels?
The heart is a pump and move blood through the blood vessels.
What are the 3 elements of circulatory system?
the blood, blood vessels and the heart are the three main elements of the circularatory system. Hope that helped :)
What is the system of vessels carrying blood away from the heart?
The Blood Vessels that carry Blood away from the Heart are the Pulmonary Artery, which carries Deoxygenated Blood from the Heart to the Lungs, and the Aorta, which transports Oxygenated Blood around the Body
