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narrowest blood vessel in vertebrates measuring 0.008-0.02 mm in diameter, barely wider than a red blood cell. Capillaries are distributed as beds, complex networks connecting arteries and veins. The function of capillaries is to exchange materials with their surroundings. For this reason, capillary walls are extremely thin, consisting of a single layer of cells through which nutrients, dissolved gases, and waste products can easily pass. This makes the capillaries the main area of exchange between the fluid (lymph) bathing body tissues and the blood. They provide a large surface area in order to maximize diffusion.
All body cells lie close to capillaries so they can receive the food and oxygen they require from the capillaries. Networks of capillaries are especially extensive in certain parts of the body. For example, in the lungs they surround the air sacs (alveoli), taking up oxygen and releasing carbon dioxide. They are also found in the lining of the gut - in little finger-like projections called villi - where they absorb the products of the digestion of food.
What else can I help you with?
What is the function of capillaries in the leaf?
function of capillaries in leaf
What is the function of the capillaries in the human circulatory system?
The function of the capillaries in the circulatory system is to allow diffusion of wastes, oxygen, and nutrients to the tissues. The rest of the circulatory system is designed to move the blood to the capillaries so they can perform this function.
Can the human body function without capillaries?
hi raleigh
What function do the capillaries serve for in the skin of a rat?
they provide heat
What are the functions of anchoring filaments that surround lymphatic capillaries?
function of anchoring filaments are to held open the lymphatic capillaries. Datuna
What are tiny blood vessels are composed of a single layer of epithelium and therefore function as exchange vessels?
Blood capillaries
Resistance to blood flow through blood vessels is a function of?
capillaries
Capillaries have very thin wallshow does this help them perform their function?
tae
What is function of the blood vessels and capillaries?
The blood vessels, which include the capillaries, function to distribute nutrients such as glucose and oxygen to the body tissues and to carry wastes such as carbon dioxide and urea away from the tissues to be excreted.
What function is of blood capillaries?
The function of blood capillaries is to provide cellular, or tissue, respiration, provide nutrients and remove waste products. They are the tiny blood vessels that are between the venules and arterioles and the interstitial space between cells.
What are capillaries and what is their function?
Capillaries are part of the cardiovascular system. The capillaries are the smallest type of vessels of the system. They reside in almost all of the tissues in the body. The capillaries are so small, that they can only allow for one red blood cell to pass through it. The capillaries is where the gas exchange from blood to tissue and tissue to blood take place.
What are the capillaries function?
These are the finer vessels that carry blood, providing oxygen and nutrients to the skin and other tissues.
