Download Across 3. clusters of tiny air sacs in the lungs where gas exchange

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1. determined by the absence or presence of specific marker proteins
found on the surfaces of red blood cells (2 words)
2. lower chamber of the heart that pumps blood out of the heart
4. system that returns fluids to the circulatory system
5. respiratory disease in which certain airways in the lungs become
constricted
6. tubes that carry blood from the heart to body organs and back again
7. disease of the heart and blood vessels
9. blood vessels that carry blood away from the heart
10. blood vessels that carry blood to the heart
14. type of cells that protect the body against
invading bacteria and viruses (2 words)
16. small bundle of cells in the right atrium
that starts each heartbeat
17. network of tiny tubes that
allows transfer of substances
between blood and the body
Across
3. clusters of tiny air sacs in the lungs where gas
exchange occurs
8. protein-rich liquid that makes up 55% of blood
11. respiratory disease in which lung tissue loses its
elasticity, greatly reducing the efficiency of gas
exchange
12. iron-containing protein molecule that gives blood its
red color
13. type of cells that carry oxygen from lungs to all cell
of the body (2 words)
15. a condition resulting when blood pressure is
continually higher than normal
18. cell fragments that are essential for blood clotting
19. upper heart chamber that receives blood returning
from the body
Label the heart to the right. Use the following words to fill
in the blanks. Inferior vena cava, Superior vena cava, right
atrium, right ventricle, left atrium, left ventricle, aorta,
pulmonary artery, and pulmonary vein. Label where blood is going
into the body and where blood is going to the lungs. Why are the
walls of the atria thinner then the walls of the ventricles? Why
are the walls of the right ventricle thinner than those of the left
ventricle?
Makeup of the Air We Breathe
Gas
O2
CO2
N2
Air Entering Lungs
19.97%
.03%
80%
Air Leaving Lungs
16%
4%
80%
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3. You exhale more CO2 then you inhale. How can this be true?
Daily Salt Intake
Systolic Pressure (mm
Hg)
Use the table above to assist you in answering the following questions.
1. Does your body use the Nitrogen you inhale?
170
If so what does it use it for?
160
150
140
130
2. Does your body use the Oxygen you inhale?
120
110
If so what does it use it for?
100
0
1
20
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4. Using the graph above and to the right describe the relationship between the amount of salt
consumed daily and systolic blood pressure.
5. A person’s normal heartbeat rate is 70 beats each minute. About how many times does a person’s
heart beat in a day? Extra Credit. Your heart will beat more than two billion times during your lifetime
assuming you live how long?
6. Why do people have different blood types? What does that term mean?
7. When does it mean to say that someone has high blood pressure? What are some causes and effects
of high blood pressure?
8. Endurance athletes, such as long-distance runners, often have larger hearts that can pump a greater
volume of blood with each heartbeat. How would these modifications help the heart respond to the
demands placed on it by endurance activities?
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