Answers

1) Cartilage, heart, retina, liver.

2) d

3) It detoxifies drugs. It makes almost all the proteins found in the blood. It synthesizes bile.

4) c

5) The Heartmate, which attaches to the heart's left ventricle, is intended only as a bridge to transplant while the Abiomed replaces the heart entirely. The Abiomed heart is self-contained within the body and does not require connections through the skin, as the Heartmate does. The Heartmate uses a deliberately roughened interior surface to help prevent blood clots, while the Abiomed heart aims to be completely smooth and seamless.

6) Calves, because they are about the same size as a human patient.

7) c

8) b

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