to provide them energy of some sort
yes
yes
Capillaries are very thin blood vessels. Oxygen and nutrients and hormones can pass through the walls of the capillaries and reach the body's cells, while red blood cells remain in the capillaries.
Capillaries do not occur in cells.Capillaries are larger than cells, indeed capillaries are made of cells.Capillaries are the smallest blood vesicles.
materials exchange between blood cells and blood
capillaries between the cells in the lungs or the capillaries between the cells in the body
No, capillaries are tissues that form tubes to transport blood throughout the body. They are made of thousands of cells.
So that white and red blood cells can pass through the capillaries
Arterioles are the small arteries that lead into the capillaries, which connect to cells in the body. Venules are the small veins that the capillaries flow back into, leaving the cells.
Both red and white blood cells pass through the capillaries.
oxygen
Human cells get water from capillaries.
blood