Capillaries - they are the smallest vessels that serve as arteries and veins.
Red blood cells supply oxygen to the cells of blood vessels through the hemoglobin protein. Hemoglobin binds to oxygen in the lungs and releases it to the cells as blood circulates throughout the body.
because it can flow also blood in these blood vessels or the stay there if the cells need oxygen
Blood vessels carry oxygen and nutrients to the cells and removes CO2 and waste.
capilaries
Red blood cells.
The air sacs send oxygen to the cells.
Blood vessels in the dermis layer of the skin supply nutrients and oxygen to skin cells. These blood vessels bring in nutrients and oxygen from the rest of the body through the bloodstream.
Bone cells receive their food and oxygen through blood vessels that supply nutrients to the bones. These blood vessels deliver nutrients and oxygen to the bone cells through a process called vascularization.
The tiniest blood vessels that carry oxygen-rich blood are the capillaries. These capillaries form a bed. The arterioles that carry the blood into the bed are high in oxygen. The oxygen is released to the cells. The rest of the bed is low in oxygen and venules carry deoxygenated blood to the veins back to the heart.
Tiny blood vessels that pass food and oxygen to cells are called capillaries. They are the smallest of the blood vessels and are designed for the exchange of nutrients and waste products between the bloodstream and surrounding tissues. Their thin walls allow for efficient diffusion of oxygen and nutrients into cells.
capilaries
YES