Exercise How Blood

Exercise How Blood Flows In Our Body

The circulatory system is a network of blood vessels that carry blood throughout the body. Blood is pumped by the heart through arteries, which are blood vessels that carry blood away from the heart. Arteries branch into smaller and smaller vessels called arterioles, which eventually lead to capillaries. Capillaries are the smallest blood vessels and are where oxygen and nutrients are exchanged for carbon dioxide and waste products. Deoxygenated blood then flows through venules, which are small veins, and eventually back to the heart through larger veins.

The circulatory system is a closed system, meaning that blood does not leave the blood vessels. This is important because it allows blood to circulate throughout the body without leaking out. The circulatory system is also a continuous system, meaning that blood flows in a continuous loop from the heart to the body and back again.

The heart is a muscular organ that pumps blood through the circulatory system. The heart has four chambers: two atria (upper chambers) and two ventricles (lower chambers). The right atrium receives deoxygenated blood from the body through the superior vena cava (a large vein) and the inferior vena cava (another large vein). The right atrium then pumps the deoxygenated blood to the right ventricle. The right ventricle pumps the deoxygenated blood to the lungs through the pulmonary artery.

In the lungs, the deoxygenated blood is oxygenated and becomes oxygenated blood. The oxygenated blood then flows back to the heart through the pulmonary veins. The left atrium receives the oxygenated blood from the lungs through the pulmonary veins. The left atrium then pumps the oxygenated blood to the left ventricle. The left ventricle pumps the oxygenated blood to the body through the aorta (a large artery).

The aorta branches into smaller and smaller arteries, which eventually lead to capillaries. Capillaries are the smallest blood vessels and are where oxygen and nutrients are exchanged for carbon dioxide and waste products. Deoxygenated blood then flows through venules, which are small veins, and eventually back to the heart through larger veins.

The circulatory system is a vital part of the human body. It provides the body with the oxygen and nutrients it needs to function properly, and it removes waste products from the body.