1. REVIEW Respiratory & Excretory Systems

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

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

4. 7. Where are the vocal cords located in the body?
larynx
8.What prevents the trachea from collapsing?
Rings of cartilage
9. Where does the actual exchange of gases occur?
Alveoli
10. During gas exchange where does the oxygen and carbon dioxide go?
Oxygen diffuses into capillaries while carbon dioxide diffuses out of capillaries into the alveoli.
11. The ______ is a long straight tube that carries air from the back of the throat to the lungs.
Trachea

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

6. 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     

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

8. 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

9. 21. What happens to each of the following during inhalation?
Diaphragm
Contracts (pulls down)
22. What happens to each of the following during exhalation?
Relaxes (moves up)

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

11. 24. Explain the function of the respiratory system.
To carry out gas exchange

12. A B C D E F G H 25. Identify the structure described.
Contain a ciliated mucus membrane
Nasal cavity (A) & trachea (D)
b. Voice box
Larynx (C)
c. Aids in breathing
Diaphragm (H)
d. Throat
Pharynx (B)
e. Windpipe
Trachea (D) A B C D E F G H

13. 26.
28. 4 4

14. 27. 4
29. 1
30. 3

15. 31.
circulatory
32.
It came from the lungs.

16. 33.
Oxygen moves from the alveoli (respiratory system) into the capillaries (circulatory) while carbon dioxide moves from the capillaries into the alveoli.

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

18. 35. Which organ produces urea?
B. Liver
36. What is the function of D?
Filter wastes from blood.
Regulate water concentration of blood.
Produce urine
37. What does organ A excrete?
Carbon dioxide, water vapor
38. Which organ detoxifies the blood?
kidneys

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

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

21. To allow urine to pass out of the body
41. Which structure produces urine?
A - kidneys
42. What is the path of urine?
Kidneys  ureters  urinary bladder  urethra
43. What stores urine?
Urinary bladder
44. What is the function of D?
To allow urine to pass out of the body

22. 45. Which human excretory structure aids in the maintenance of normal body temperature?
Skin
46. Why is the skin also an excretory organ?
It excretes water, salt, and urea in the form of perspiration (sweat).