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.
The answer to this is yes, rabbits can eat alfalfa. However, its important to keep in mind that adult rabbits are better off eating a diet made up of primarily grass hay, such as timothy hay. Alfalfa is a legume hay, so it is more rich in protein and calcium than timothy hay, while timothy hay is higher in fiber. And thats what an adult rabbit really needs, high quality fiber. Feeding small amounts of alfalfa to your adult rabbit can be a nice way to introduce a little variety. Just a small handful from time to time will be appreciated by your rabbit. Just donât overdo it, your rabbit may end up liking alfalfa better than grass hay, and you donât want him to get stubborn.