7A REVIEW Respiratory & Excretory Systems

1. Which is the correct sequence for the path of oxygen through the respiratory system? Nasal cavity Pharynx Larynx Trachea Bronchi Bronchioles Alveoli

bronchi diaphragm epiglottis bronchioles 2. The tubes that branch from the trachea are the 3. The dome shaped muscle below the chest cavity is called the 4. During swallowing, the air passage of the pharynx is covered by the 5. Alveoli in the lungs are connected to the bronchi by a network of tiny tubes called bronchi diaphragm epiglottis bronchioles 3

6. Explain what happens to gases during gas exchange in the alveoli. Oxygen in alveoli diffuses into capillaries (blood). Carbon dioxide in capillaries (blood) diffuses into alveoli.

larynx rings of cartilage alveoli 7. Where are the vocal cords located in the body? 8.What prevents the trachea from collapsing? 9. Where does the actual exchange of gases occur? 10. During gas exchange where does the oxygen and carbon dioxide go? larynx rings of cartilage alveoli O2 diffuses into capillaries. CO2 diffuses out of capillaries and into alveoli.

11. The ______ is a long straight tube that carries air from the back of the throat to the lungs. trachea

12. What structures trap foreign particles and bacteria in the nose and trachea? pharynx        epiglottis      cilia        trachea c

c 13. The order of air movement with in the lungs is best described as bronchioles to bronchi to alveoli       bronchi to bronchioles to alveoli trachea to bronchi to alveoli        bronchi to alveoli to bronchioles c

14. Where are the vocal cords located in the body? Larynx 15. During swallowing, the air passage of the pharynx is covered by the epiglottis

16. The FIRST branches off the trachea are called bronchi      17. What prevents the trachea from collapsing? rings of cartilage   

18. Alveoli in the lungs are connected to the bronchi by a network of tiny tubes called arterioles          venules        capillaries           bronchioles d

b 19. Inside the alveoli, carbon dioxide and oxygen are transported along microscopic tubules are exchanged between air and blood   are produced inside cells        are exchanged for other gases b

20. Humans breathe more rapidly during exercise than before it because during exercise the blood contains an increased level of oxygen a decreased number of red blood cells an increased level of carbon dioxide a decreased amount of hemoglobin 3

21. What happens to each of the following during inhalation? a. Diaphragm b. Rib cage c. Pressure in chest cavity contracts (pulls down) expands decreases

22. What happens to each of the following during exhalation? a. Diaphragm b. Rib cage c. Pressure in chest cavity relaxes (moves up) relaxes increases

23. Identify the structures labeled in the diagram. A – nasal cavity B – pharynx C – larynx D – trachea E – bronchi F – bronchioles G – lung H - diaphragm A B C D E F G H

24. Explain the function of the respiratory system. To carry out gas exchange between the external and internal environment A B C D E F G H

25. Identify the structure described. a. Contain a ciliated mucus membrane b. Voice box c. Aids in breathing d. Throat e. Windpipe A B C Nasal cavity and trachea D larynx E F G diaphragm pharynx trachea H

26. 4

27. 4

28. 4

29. 1 30. 3

31. circulatory 32. It came from the lungs.

33. Oxygen moves from the alveoli (respiratory system) into the capillaries (circulatory) while carbon dioxide moves from the capillaries into the alveoli.

34.Identify A, B, and D. lung liver kidney

B - liver 35. Which organ produces urea? 36. What is the function of D? B - liver Filter wastes from blood Regulate water concentration of blood. Produce urine

37. What does organ A excrete? 38. Which organ detoxifies the blood? CO2 and H2O vapor B - Liver

39. What are metabolic wastes? Examples? Wastes from your cells. CO2, H2O, salts, urea

Kidney Ureter Urinary bladder Urethra 40. Identify structures A, B, C, and D. Kidney Ureter Urinary bladder Urethra

Kidneys  ureters  urinary bladder  urethra 41. Which structure produces urine? 42. What is the path of urine? A - Kidneys Kidneys  ureters  urinary bladder  urethra

Releases urine from the body. 43. What stores urine? 44. What is the function of D? C - Urinary bladder Releases urine from the body.

46. Why is the skin also an excretory organ? 45. Which human excretory structure aids in the maintenance of normal body temperature? 46. Why is the skin also an excretory organ? Skin It excretes water, salts and small amounts of urea in the form of perspiration.