1. Warm-Up Fill in the blanks in blood’s path through the heart:
from the body
1. vena cava
2.____
3.____
4.____
to the lungs
5. pulmonary vein
6.____
7.____
8.____
back to the body
Fill in the blanks in
blood’s path through
the heart:
Heart Diagram

2. Respiratory System

3. Functions of the Respiratory System
Supply oxygen to the blood
Remove carbon dioxide from the blood

4. What is the function of the respiratory system?
To provide oxygen & carbon dioxide to the body cells.
To provide carbon dioxide to body cells & remove oxygen.
To provide oxygen to body cells & remove carbon dioxide.
To remove oxygen & carbon dioxide from the body cells.

5. Organs of the Respiratory System
Nose & Mouth
(air enters through the nostrils & mouth)
Nasal cavity = air
is cleaned, warmed,
and moistened

6. Organs of the Respiratory System
Throat
Pharynx =
passageway for
both food and air

7. Organs of the Respiratory System
Throat
Pharynx = passageway for
both food and air
Epiglottis = flap
that closes over the
larynx when
swallowing to keep
food & water out

8. Organs of the Respiratory System
Throat
Pharynx = passageway for
both food and air
Epiglottis = flap that closes
over the larynx when
swallowing to keep food &
water out
Larynx = air only;
vocal chords are
attached here

9. Organs of the Respiratory System
Throat
Pharynx = passageway for
both food and air
Epiglottis = flap that closes
over the larynx when
swallowing to keep food &
water out
Larynx = air only; vocal
chords are attached here
Trachea (windpipe)=
c-shaped rings of
cartilage keep it
open all the time

10. Which of these does the nasal cavity NOT do to inhaled air?
Clean
Warm
Moisten
Condense 10

11. What is the flap called that prevents food from entering the larynx?
Pharynx
Epiglottis
Larynx
Trachea 10

12. What is the first structure that only air can pass through (not food)?
Mouth
Pharynx
Larynx
Trachea 10

13. Organs of the Respiratory System
Lungs
(where oxygen &
carbon dioxide
are exchanged)

14. Organs of the Respiratory System
Lungs (where oxygen &
carbon dioxide are exchanged)
Bronchi = 2 small
branches at end
of trachea; carry
air into lungs

15. Organs of the Respiratory System
Lungs (where oxygen &
carbon dioxide are exchanged)
Bronchi = 2 small
branches at end of
trachea; carry air into
lungs
Bronchioles =
smaller branches
off of bronchi

16. Organs of the Respiratory System
Lungs (where oxygen &
carbon dioxide are exchanged)
Bronchi = 2 small
branches at end of
trachea; carry air into
lungs
Bronchioles = smaller
branches off of bronchi
Alveoli = tiny,
grape-like sacs at
the end of bronchioles; surrounded by capillaries

17. Organs of the Respiratory System
Diaphragm
(muscle below the
lungs that helps move
air in and out of the
body)

18. What is this structure called?
bronchi
bronchiole
alveoli
diaphragm 10

19. What causes you to exhale?
Your lungs contract to squeeze the air out.
Your diaphragm moves up, pushing air out of the lungs.
Your ribs squeeze the air out of your lungs.
Your diaphragm moves down, letting air escape from your lungs. 10

20. Gas Exchange in the Lungs
Takes place between alveoli and capillaries

21. Gas Exchange in the Lungs
Takes place between alveoli and capillaries
INHALE
oxygen enter body
into alveoli
into capillaries
into blood
to body cells

22. Gas Exchange in the Lungs
Takes place between alveoli and capillaries
EXHALE
leaves body
into alveoli
into capillaries
into blood
CO2 from body cells

23. Where does the exchange of oxygen and carbon dioxide occur?
The heart
The alveoli
The pharynx
The body cells 10

24. What carries the blood back to the heart after it picks up oxygen from the alveoli?
Lungs
Aorta
Pulmonary artery
Pulmonary vein 10

25. Excretory System

26. Functions of Excretory System
Rids blood of
wastes (urea)

27. Functions of Excretory System
Rids blood of
wastes (urea)
Controls blood
volume by removing
extra water
produced by cells

28. Functions of Excretory System
Rids blood of
wastes (urea)
Controls blood
volume by removing
extra water
produced by cells
Balances salts and
water so cells can function properly

29. Which is not a function of the excretory system?
Removes wastes from the blood
Removes excess water from the blood
Removes carbon dioxide from the blood
Removes excess salt from the blood 10

30. Organs of the Excretory System
Renal Artery = carries blood into the kidneys
Renal Vein = carries blood out of the kidneys
Kidneys = filter blood that has collected wastes from cells

31. Organs of the Excretory System
Renal Artery = carries
blood into the kidneys
Renal Vein = carries
blood out of the kidneys
Kidneys = filter blood
that has collected
wastes from cells
Nephrons = filters inside the kidneys
Produce urine (sterile waste fluid, 96% water)

32. What does the renal vein carry?
Blood containing waste into the kidneys
Blood containing waste back to the body
Clean blood into the kidneys
Clean blood back to the body 10

33. What is urine mostly made of?
Water
Urea
Salt
Blood 10

34. Organs of the Excretory System
Ureters = tubes that
lead from each kidney
to bladder

35. Organs of the Excretory System
Ureters = tubes that
lead from each kidney
to bladder
Urinary bladder =
muscular organ that
holds urine

36. Organs of the Excretory System
Ureters = tubes that
lead from each kidney
to bladder
Urinary bladder =
muscular organ that
holds urine
Urethra = tube that
carries urine from the
bladder out of the body

37. What is this structure?
Ureter
Urine
Bladder
Urethra 10

38. Where is urine stored until the body is ready to eliminate it?
Kidneys
Ureters
Bladder
Urethra 10

39. Other Excretory Organs
Skin = releases
perspiration (water
& salts) to cool off
body

40. Other Excretory Organs
Skin = releases perspiration (water & salts) to cool off body
Lungs = release carbon dioxide from the body

41. Which statement is true about excreted substances?
Water can only be removed by the kidneys.
Excess salt can be removed by the kidneys & skin.
Blood carries all waste products to the lungs to be removed from the body.
Carbon dioxide can be excreted by the skin. 10

42. Which system does not include an excretory organ?
Excretory system
Integumentary system
Cardiovascular system
Respiratory system 10