Answer Happy

Exercise #2 - Blood Vessel Mapping For questions 9 and 10 of the lab assignment, you will pretend that you are a red blood cell that needs to travel from Blood Vessel A to Blood Vessel B in the human body. Write down all the blood vessels you will travel through. This pathway may include blood vessels in both circuits and both sides of the heart. Hints and/or Rules of Making "Driving Directions": ✓ To go from an artery to a vein, you need to go through an arteriole, capillary and venule. To go from the systemic circuit to the pulmonary circuit, you must visit the right side of the heart. ✓ ✓ To go from the pulmonary circuit to the systemic circuit, you must visit the left side of the heart. ν Το go from systemic artery A to systemic artery B, you must visit the systemic veins, right heart, entire pulmonary circuit left heart before going to systemic artery B. ✓ Don't forget about the hepatic portal system. Most venous blood from the abdominal organs have to go through the hepatic portal vein before returning to the general systemic circuit. ✓ There may be more than 1 right answer as there might be multiple pathways to begin and end. ✓ You will need to look at multiple pages in your textbook when designing your "driving directions". ✓ Keep your answer clear and accurate using ONLY THIS FORMAT: "starting artery" → next artery → etc. 9. Start at the Right Renal Artery and end at the Left Middle Cerebral Artery. Right renal artery →
10. Start at the Left Popliteal Artery and end at the Right Brachial Vein. Left popliteal artery → Assume someone has been injured in a car accident and is bleeding profusely. What pressure points could you compress to help stop the bleeding from the following areas? 11. Thigh 12. Forearm 13. Calf 14. Thumb 15. Ankle Exercise #3 - Special Circulations Consider the arterial circulation of the brain. The arterial circulation is an anastomosis called the Circle of Willis. Review the diagram on page 741 of the text and then answer the following questions. 16. What two pairs of arteries arise from the internal carotid artery? 17. The posterior cerebral arteries serving the brain arise from what artery?
18. What nervous and endocrine structures are found in the middle of the Circle of Willis? 19. A routine brain scan on an elderly man reveal a partial occlusion (blockage) of the internal carotid artery, het blood supply to his cerebrum is unimpaired. What are two possible causes of the occlusion? 20. What compensatory mechanism is maintaining blood supply to the brain? Explain your answer.