Diffusion ;)
diapedesis
Diapedesis
Glucose and oxygen are transported from the blood to cells through capillary walls by a process called diffusion. The concentration gradient between the blood and the cells allows these molecules to passively move across the capillary walls. Once inside the cells, glucose and oxygen are used for energy production through cellular respiration.
Capillaries are the tiny blood vessels where exchange of nutrients, gases, and waste products occurs between the blood and body tissues through the process of diffusion. They have thin walls that allow for efficient exchange of substances.
Capillary walls receive oxygen in the lungs by a process known as diffusion.
neutrophils
diapedesis
Osmosis
The capillary walls are the thinnest blood vessels to allow the exchange of materials.Capillary walls only have a single layer of endothelial cells (the flattened layer of cells that line the closed spaces in the body). This is unlike the arteries and veins which have multiple layers such as smooth muscle, elastin, and connective tissues. The thin walls allow for oxygen and waste products (such as carbon dioxide) to diffuse between the tissues and blood.
Thin walls to allow gases to diffuse across them
Filtration results when nutrients are moved through the capillary walls by hydrostatic pressure. Hydrostatic pressure in the capillaries is greater than the osmotic pressure so there is a net movement of fluid and/or solutes out of the capillaries.
Diffusion.