The birth control sponge (aka the contraceptive sponge or “the sponge” for short), is a small, round sponge made from soft, squishy plastic. You put it deep inside your vagina before sex. The sponge ...

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The inferior vena cava (also known as IVC or the posterior vena cava) is a large vein that carries oxygen-depleted blood from the torso and lower body to the right side of the heart. From there the ...

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