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PDH EXAM 2 PART 1 |154 QUESTIONS | WITH PASSED SOLUTIONS!!
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PDH EXAM 2 PART 1 |154 QUESTIONS | WITH PASSED SOLUTIONS!!
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PDH Exam 21. What is the res- Transfers oxygen from air to blood and disposes waste
piratory system (carbon dioxide)
function?
2. Explain the struc- 1. Air breathed in through nasal cavity
ture of the respi- 2. Joins to pharynx then through larynx
ratory system. 3. Larynx joins to trachea (windpipe)
4. Epiglottis sits above larynx to prevent food entering
trachea
5. Trachea splits into primary bronchi
6. Bronchus divides into smaller branches, bronchioles
7. Contains small sacks, alveoli
8. Deoxygenated blood exchange in and out of blood
through capillaries
3. Where does From right side of heart to the lungs for disposal of carbon
deoxygenated dioxide.
and oxygenated In lungs, blood picks up oxygen and blood is returned
blood travel through left side.
(respiratory
system)
4. Another word for pulmonary ventilation
breathing
5. What is the di- Thin dome shaped muscle on lower ribs controlled by
aphragm? body's nerves
6. How do the ribs The diaphragm and intercostal muscles contract
lift in breathing
7. What happens Air pressure is lowered in the alveoli causing air to flow
when the ribs lift quickly through respiratory tract into lungs
in breathing
8. What happens Ribs resume normal positions and lungs retract, carbon
when the di- dioxide flow out of lungs
aphragm relaxes
9.
, PDH Exam 2
What happens to Becomes deeper because more muscles are involved to
breathing during assist the diaphragm. This increases volume of air that can
exercise? be breathed in.
10. Where is the lar- between pharynx and trachea
ynx located?
11. What does the prevents food from entering the trachea
epiglottis do?
12. What does the right and left bronchi
trachea split
into?
13. What does the The trachea transports the air to and from the lungs.
trachea do?
14. What do alveoli Carry out gas exchange in the body
do?
15. Where does ex- In the lungs because of high levels of carbon dioxide and
ternal respiration low levels of oxygen.
occur?
16. When does Exercise
breathing be-
come deeper and
more frequent?
17. What do tissue Use oxygen frequently, for each volume of oxygen they
cells do? produce equal carbon dioxide
18. Where does the From tissue to capillaries and veins
tissues carbon
dioxide move to?
19. Where does in- tissues
ternal respiration
occur?
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