(Solved): 1. How do the circulatory systems of an adult pig and a fetal pig differ? 2. What blood vessels bra ...

1. How do the circulatory systems of an adult pig and a fetal pig differ? 2. What blood vessels branch off of the aortic arch? - brachiocep halic ariery, ieft cornmen carotid, left subclavin 3. What two valves prevent blood backflow into the atria from ventricles? - tricuspia and bicuspid valves 4. Which muscle is most responsible for respiration in an adult mammal? 5. Why specifically does an animal need $${\mathrm{O}}_2$$ ? [Don't answer "to live", because that begs the question about why we need it to live. Remember what you learned in Principles of Biology I.] 6. Where does the $${\mathrm{CO}}_2$$ that you expire (breathe out) come from? 7. What kind of waste is eliminated by the urinary system? 8. What is the functional unit of the kidney? 9. Distinguish between a ureter and a urethra. 10. How does the uterus of a pig differ from the uterus of a human?