What is the function of the capillaries

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.

Explanation:

one pad at the centre of the baby's chest and the other pad on the centre of the baby's upper back.

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answer; /// i believe its the cochlea;