Commercial Door Threshold - Width 4 in, Color/ Finish Mill Finish, Material Aluminum, Thickness 1/2 in, Length 145 in Average rating: out of 5 stars, based on reviews Write a review ratings q&a
Capillaries connect the arteries to veins. The arteries deliver the oxygen-rich blood to the capillaries, where the actual exchange of oxygen and carbon dioxide occurs. The capillaries then deliver the waste-rich blood to the veins for transport back to the lungs and heart. Veins carry the blood back to the heart.
3. Arterioles-smallest arteries, these carry blood into capillaries. a. When these constrict, they shut off blood to specific tissues. When they dilate, blood flow increases greatly into tissues. III. CAPILLARIES-microscopic blood vessels. Are the smallest vessels in the body.rterioles carry blood into capillaries (capillary beds) which. carry blood into body tissues. B. Blood returning from the capillary beds empties into venules that merge to form veins. Veins. ultimately empty into the heart. II. ARTERIES-carry blood away from the heart.