Capillaries are where fluids, gasses, nutrients, and wastes are exchanged between the blood and body tissues by diffusion. Capillary walls contain small pores that allow certain substances to pass into and out of the blood vessel.apillaries measure in size from about 5-10 microns in diameter. Capillary walls are thin and are composed of endothelium (a type of simple squamous epithelial tissue). Oxygen, carbon dioxide, nutrients and wastes are exchanged through the thin walls of the capillaries.
Quick Answer. Cottontail rabbits are herbivorous animals that will eat nearly any plant or vegetable that they can get. They do not prefer any type of plant compared to others; but they will tend to eat more of certain things, such as grass or bark, depending on the season that it is. Continue Reading.
A good example of what they should NOT eat. It is not suitable to feed any vegetable, fruit or plant until you have checked on them and know they are safe. Not to do so, can cause your rabbit to have serious problems that may become fatal.t is best to confine the rabbit's grazing or eating part of the garden to a grassy area. Foods that are safe to feed a rabbit in small amounts are Basil, Beet Greens, Carrot and Carrot tops, Celery leaves, Dandelion leaves and flower, Dill, Mint, Parsley, Watercress, Wheatgrass.