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NAME: Year 11 Biology Circulatory System TEST Circle your choice of answer for the first ten questions: 1. Which of the following describes a possible path of a red blood cell through the human body? J. K. L. M. 2. If a small blood clot breaks from an artery in the leg, it is most likely to get stuck in and block up: J. K. L. M. 3. increased number of red blood cells increased number of white blood cells increased volume (amount) of blood increased amount of haemoglobin in the blood Most arteries J. K. L. M. 7. vena cava and pulmonary vein aorta and pulmonary artery vena cava and the pulmonary artery aorta and pulmonary artery People living at high altitudes have certain features of their circulatory system which help them to cope with the lower levels of oxygen. Which of the following would not help their bodies cope with low oxygen levels: J. K. L. M. 6. the semilunar valves are closed during systole the left ventricle relaxes during systole arteries contain pocket valves the bicuspid valve closes during systole Deoxygenated blood is found in the: J. K. L. M. 5. a capillary in the leg the coronary artery (in the heart) a small artery of the lungs a blood vessel supplying the brain Which of the following is a true statement? J. K. L. M. 4. heart, kidney, heart, lung, heart, intestine heart, lung, kidney, intestine, heart heart, lung, heart, kidney, liver heart, kidney, lung, intestine, liver carry deoxygenated blood have thinner walls than veins carry blood to the heart carry oxygenated blood The blood vessels that carry blood away from the heart are J. K. L. M. veins red blood cells arteries white blood cells 8. Capillaries J. K. L. M. 9. Veins carry blood J. K. L. M. 10. under higher pressure than arteries away from the heart under lower pressure than arteries that is always deoxygenated If a small blood clot breaks from an artery in the lungs, it is most likely to get stuck in and block up: J. K. L. M. 11. are the smallest blood vessels are located between small arteries and small veins carry materials to and from cells all of the above a capillary in the arm the coronary artery (in the heart) a small artery of the lungs a blood vessel supplying the brain /10 Complete the following sentences: The walls of the heart are made up of ________________________________________ /1 Three functions of the circulatory system are ____________________________________ ________________________________________________________________________ 12. ________________________________________________________________________ /3 The nonliving, yellow (straw) coloured portion of the blood is called ________________ /1 The function of platelets is to _______________________________________________ /1 Name the parts indicated by arrows in the following diagram of the heart: /6 13. On the diagram above draw arrows to show the flow of oxygenated blood through the heart. 14. What is happening to the blood in the structure indicated by a during systole? ______________________________________________________________________________ 15. /2 What is diastole? ______________________________________________________________________________ 17. /1 Why is the wall of the left ventricle thicker than the wall of the right ventricle? ______________________________________________________________________________ 16. /1 /2 Explain the difference between systemic and pulmonary circulation ______________________________________________________________________________ ______________________________________________________________________________ ______________________________________________________________________________ ______________________________________________________________________________ 18. 19. /4 What are the three main components of blood? Name them and give their approximate percentages _______________ ______% _______________ ______% _______________ ______% /3 Name the following: A cell in the blood involved in fighting germs ____________________________ The valve at the entrance to the pulmonary artery ____________________________ The four chambers of the heart _______________ _____________ _______________ _____________ Red chemical involved in carrying oxygen in the blood ____________________________ The valve between the right atrium and right ventricle ____________________________ A blood vessel through which food molecules can pass ____________________________ /9 20. Compare arteries, veins and capillaries; include a labelled diagram showing the structural differences. _________________________________________________________________________________________ _________________________________________________________________________________________ _________________________________________________________________________________________ ________________________________________________________________________________________/4 Artery Vein Capillary /3 21. In a medical condition known as “hole in the heart” there is a hole that allows blood in the right side of the heart to mix with blood in the left side of the heart. Explain the problems a person with this condition would have. _________________________________________________________________________________________ _________________________________________________________________________________________ /2 22. Explain the differences between the blood found in the aorta and the blood found in the vena cava. Why is there a difference? _________________________________________________________________________________________ _________________________________________________________________________________________ _________________________________________________________________________________________ _________________________________________________________________________________________ _________________________________________________________________________________________ /4 23. Some people develop a problem with their bicuspid valve so that it no longer functions properly. a) What would be the result of this problem? ___________________________________________________________________________________ b) What simple procedure could a doctor do (even in a patient’s home) to diagnose this problem? ___________________________________________________________________________________ /2 TOTAL /60