Artery
These are blood vessels that carry oxygen-rich blood from the heart to the body. It has three layers with the middle layer made up of smooth muscle and elastic fibers in the outer and inner layers. It has a broad, circular lumen.
Vein
These are blood vessels that carry deoxygenated blood from the body to the heart. The arteries and veins connect the heart to the body and thus circulate the blood. It is also made up of three layers similar to the artery, but it has a wider lumen.
Capillary
Capillaries are the tiniest blood arteries in the body. They transport oxygenated blood from arteries to bodily tissues and return deoxygenated blood to veins. Capillaries are therefore an important component of the circulatory system, acting as a bridge between arteries and veins.
Artery
These are blood vessels that carry oxygen-rich blood from the heart to the body. It has three layers with the middle layer made up of smooth muscle and elastic fibers in the outer and inner layers. It has a broad, circular lumen.
Vein
These are blood vessels that carry deoxygenated blood from the body to the heart. The arteries and veins connect the heart to the body and thus circulate the blood. It is also made up of three layers similar to the artery, but it has a wider lumen.
Capillary
Capillaries are the tiniest blood arteries in the body. They transport oxygenated blood from arteries to bodily tissues and return deoxygenated blood to veins. Capillaries are therefore an important component of the circulatory system, acting as a bridge between arteries and veins.