Q:

How is the heart supplied with oxygenated blood?

A:

Quick Answer

The heart draws oxygenated blood from the lungs and distributes it to the rest of the body using a system of arteries and veins. Small coronary arteries and the pulmonary veins provide oxygenated blood into the heart. The pulmonary artery then pumps deoxygenated blood to the lungs where it is resupplied with oxygen.

Know More

Full Answer

The heart is made up of two parts separated by the septum. Four chambers and four valves help control the way the blood flows into and out of the heart. Each chamber consists of a top part, or atrium, and a bottom part, or ventricle. The right atrium and the right ventricle pump blood into the lungs via the pulmonary artery. The blood picks up oxygen in the lungs and returns to the heart through the left atrium and left ventricle. The left atrium pumps blood through other parts of the heart and the rest of the body. The oxygenated blood circulates through the body. Deoxygenated blood from the body goes back to the right atrium where the process begins again.

The aorta and the coronary arteries play an important role in providing oxygenated blood to the rest of the heart. The coronary arteries help move oxygenated blood from the aorta to the heart. The aorta provides oxygenated blood from the left atrium and left ventricle to the rest of the body.

Learn more about Human Anatomy

Related Questions

  • Q:

    Do pigs have blood veins?

    A:

    The circulatory system of a pig is much like that of a human, with a four-chambered heart and a system of arteries and veins that carry blood. All vertebrates use a similar system to transport and distribute oxygen molecules to the cells of the body.

    Full Answer >
    Filed Under:
  • Q:

    From which chamber of the heart does blood enter the lungs?

    A:

    The blood leaves the right ventricle on its way to the lungs. Contraction of the right ventricle pushes deoxygenated blood into the pulmonary artery, which takes the blood to the lungs for oxygenation. Pulmonary veins then bring the blood back to the heart's left atrium, explains How Stuff Works.

    Full Answer >
    Filed Under:
  • Q:

    How does oxygenated blood become deoxygenated?

    A:

    Red blood cells contain a protein called hemoglobin that takes up and releases oxygen in response to the environment around it. Hemoglobin is what's called a "metalloprotein" because it incorporates atoms of iron into its structure. This iron is positively charged and readily binds with oxygen. In oxygen-poor environments, the hemoglobin releases the oxygen it carries and picks up carbon dioxide.

    Full Answer >
    Filed Under:
  • Q:

    How does the diaphragm help during inhalation and expiration?

    A:

    The diaphragm adopts a curved shape when it is relaxed, and when someone inhales it flattens and allows the lungs to expand. During expiration it gradually curves again, allowing for expiration.

    Full Answer >
    Filed Under:

Explore