Answer: Capillaries, the smallest and most numerous of the blood vessels, form the connection between the vessels that carry blood away from the heart (arteries) and the vessels that return blood to the heart (veins). The primary function of capillaries is the exchange of materials between the blood and tissue cells.
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ANSWER: The new file option
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First is contractions get stronger, then the baby is born, then umbilical cord is cut and lastly the placenta is pushed out.