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Science Study Guide ~ Human Body Systems
Unit A, Chapter 4, Lessons 1, 2, 3
1.
Know the main parts and main jobs of the skeletal, muscular, respiratory,
circulatory, digestive, and nervous systems (from chart/outline).
See outline on the next page for all body systems.
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Vocabulary
2.
lungs – the main organs of the respiratory system
3.
capillary – a tiny blood vessel that allows gases and nutrients to pass from blood to cells
4.
heart – the muscle that pumps blood through blood vessels to all parts of the body
5.
artery – a blood vessel that carries blood away from the heart
6.
vein – a blood vessel that returns blood to the heart
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Fill in the blank with the correct term.
7.
Your heart is about the size of your
8.
The four sections of the heart are known as
9.
Valves
10.
Carbon dioxide
fist
.
chambers
.
allow blood to flow in a one-way path through the heart.
is the waste product of cells.
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Short Answer
11.
12.
Why is regular exercise especially
good for the circulatory system?
Regular exercise strengthens the
heart and lungs by making them work
harder, which increases the amount of
oxygen in the body.
What do you think would happen if
blood entering the heart mixed with
blood leaving the heart? Blood
carrying oxygen would mix with blood
carrying carbon dioxide. The body
might not get all of the oxygen it
needed.
Label the organs of the human body:
brain
esophagus
lungs
heart
large intestines
stomach
small intestines
(outside)
(inside)
Human Body Systems Outline
(Answers Question #1 from Study Guide)
I.
II.
III.
IV.
Skeletal System
A.
Parts
1.
Bones
2.
Joints
B.
Functions
1.
Protects organs
2.
Support your body
3.
Help body parts move
Muscular System
A.
Parts
1.
Skeletal muscle
2.
Cardiac muscle
3.
Smooth muscle
B.
Functions
1.
Move body parts
Respiratory System
A.
Parts
1.
Lungs
B.
Functions
1.
Breathe in oxygen
2.
Removing carbon dioxide
Circulatory System
A.
Parts
1.
Heart
2.
Veins
3.
Arteries
4.
Capillaries
B.
Functions
1.
Carry blood to and from
body cells
V.
Nervous System
A.
Parts
1.
Brain
2.
Spinal cord
3.
Nerves
4.
Sense organs
B.
Functions
1.
Controls all body
systems
VI.
Digestive System
A.
Parts
1.
Mouth
2.
Esophagus
3.
Stomach
4.
Intestine
B.
Functions
1.
Provide nutrients for
your body