veins are large, thin-walled blood vessels that carry blood to the heart!!!!
Lymphatics resemble veins in structure but have thinner walls and more valves.
Valves
compare and contrast the structure of a vein and artery
The coronary veins drain into the coronary sinus, which in turn drains into the right atrium.
Arteries carry blood away from the heart, veins carry blood to the heart, and capillaries branch off of arteries and veins. Capillaries are essentially min-arteries and min-veins.
Valves
yes
It comes back through the pulmonary veins. Veins always carry blood TO the heart. This is the only case where veins are high in oxygen.
The Xylem.
The oxygen saturation is highest in the pulmonary veins. These veins carry oxygenated blood from the lungs back to the heart to be pumped to the rest of the body.
The plant known for its network of veins is the maple tree, particularly its leaves, which display a distinctive palmate venation pattern. This structure features a central vein from which smaller veins branch out, resembling a network. Additionally, many other plants, such as those in the Aceraceae family, also exhibit this characteristic. Network veins are often seen in broadleaf plants, contributing to their overall leaf structure and function.
Placenta containng arteriesd and veins .