Select all that apply Which contributions to medicine were made by William Harvey? \( \square \) He proved that the same blood flows through veins and arteries. \( \square \) He discovered the liver. \( \square \) He showed that blood circulation begins at the heart. \( \square \) He was the first to dissect human bodies.

Let's evaluate each statement regarding William Harvey's contributions to medicine: 1. **He proved that the same blood flows through veins and arteries.** - This statement is true. William Harvey demonstrated that blood circulates throughout the body and that the same blood flows through both veins and arteries. 2. **He discovered the liver.** - This statement is false. The liver was known long before Harvey's time, and he did not discover it. 3. **He showed that blood circulation begins at the heart.** - This statement is true. Harvey is credited with the discovery that blood circulation is a continuous process that starts from the heart. 4. **He was the first to dissect human bodies.** - This statement is false. While Harvey did perform dissections, he was not the first to dissect human bodies; this practice had been done by others before him. Based on this evaluation, the correct contributions to medicine made by William Harvey are: - \( \square \) He proved that t