What is the arterial and venous system?

What is the arterial and venous system? Arteries are blood vessels responsible for carrying oxygen-rich blood away from the heart to the body. Veins are blood vessels that carry blood low in oxygen from the

What is the arterial and venous system?

Arteries are blood vessels responsible for carrying oxygen-rich blood away from the heart to the body. Veins are blood vessels that carry blood low in oxygen from the body back to the heart for reoxygenation. Arteries and veins are two of the body’s main type of blood vessels.

What connects the arterial and venous system together?

Capillaries are small, thin blood vessels that connect the arteries and the veins. Their thin walls allow oxygen, nutrients, carbon dioxide and waste products to pass to and from the tissue cells.

What is the function of the arterial system?

Arterial system Arteries supply the body with oxygenated blood – with the exception of the pulmonary arteries from the heart; these carry deoxygenated blood to the lungs, and the umbilical artery, which carries deoxygenated blood from the foetus to the placenta.

Are arteries blue or red in diagrams?

Arteries (in red) are the blood vessels that deliver blood to the body. Veins (in blue) are the blood vessels that return blood to the heart.

Why do we inject in veins and not arteries?

You always want to inject into a vein and never into an artery. Veins are blood vessels that carry blood from the extremities of the body back to the heart and lungs where it becomes re-oxygenated. Veins have no pulse, and the blood they carry is a deep, dark red because it is low in oxygen.

What is the difference between arterial and venous blood?

Arterial blood is the oxygenated blood in the circulatory system found in the pulmonary vein, the left chambers of the heart, and in the arteries. It is bright red in color, while venous blood is dark red in color (but looks purple through the translucent skin). It is the contralateral term to venous blood.

Why do arteries have thicker walls than veins?

Arteries experience a pressure wave as blood is pumped from the heart. This can be felt as a “pulse.” Because of this pressure the walls of arteries are much thicker than those of veins. In addition, the tunica media is much thicker in arteries than in veins.

Why are veins closer to the skin than arteries?

Veins contain a smaller mass of muscle tissue than arteries, and are located in closer proximity to the skin’s surface. Veins differ from arteries in that they contain valves which keep the blood moving in one direction, without risk of reflux or back -flow.

What does blue mean on a heart diagram?

Representative colors of Arteries and Veins Note that arteries, which carry blood away from the heart, are indicated in red (for oxygen-rich blood) and that veins, which carry blood toward the heart, are indicated in blue (for oxygen-poor blood).