Download Circulatory System and Respiratory System Notes

Name _________________________________________
Science Notes
Chapter 4 – Human Body Systems
1. Cells are the basic building blocks of life. Each cell has a special
job.
2. Cells of the same type work together to form tissues.
3. A group of different kinds of tissues that work together to perform a
special task is an organ.
4. Groups of organs work together to form systems.
5. The respiratory system allows your body to breathe in oxygen and to
breathe out carbon dioxide.
6. The main organs of the respiratory system are the lungs.
7. Air enters your body through your nose and mouth.
8. The trachea, or windpipe, connects your nose to your lungs.
9. Your lungs get bigger as you breathe in air, and they get smaller as
you breathe out air.
10. The air travels through a system of tubes in your lungs that end in
tiny air sacs.
11. Oxygen passes from the air sacs into your bloodstream, which
delivers it to all of the cells in your body.
12. Carbon dioxide is removed from the cells and taken back to your
lungs so it can be removed from your body.
13. The circulatory system is responsible for taking blood, which
contains oxygen and nutrients, to all of the cells in your body.
14. The heart is the muscle that pumps blood throughout your body.
15. Arteries are the blood vessels that take the blood to all of the parts
of your body.
16. Capillaries are the very small blood vessels at the end of the
arteries that allow oxygen to move into your cells and carbon
dioxide to move out of your cells.
17. Veins are the blood vessels that return the blood to your heart.
18. The valves in the heart keep the blood from moving the wrong way.
Name ________________________________________ Date _________________
Science Assessment
The Human Body
Word Bank:
Arteries
Capillaries
Heart
Carbon dioxide
Cells
Organs
Circulatory system
Respiratory system
Lungs
System
Tissues
Veins
Oxygen
1. Your body breathes in __________________________________ and
breathes out _____________________________________________.
2. The blood vessels that take the blood from the heart to the
rest of your body are the ___________________________________.
3. The blood vessels that take the blood from the parts of your
body back to your heart are the __________________________.
4. The ____________________________________ is the muscle in the
body that pumps the blood throughout your body.
5. The _______________________________________ are the building
blocks of the body.
6. The _________________________________ are the main organs
of the respiratory system.
6. A group of tissues of different kinds that work together to
perform a particular job is called a(n) ____________________.
7. ________________________________________ are the very small
blood vessels that allow oxygen to move into the cells and
carbon dioxide to move out of the cells.
8. A group of organs that work together in the body is called a
___________________________________________.
9. Group of cells of the same type work together to form
_____________________________________________.
10. The _____________________________________________(system)
allows our body to breathe in and out.
11. The ___________________________________________(system) is
responsible for taking blood to all of the parts of your body.
TAKE YOUR TIME, AND READ EACH QUESTION CAREFULLY.
GOOD LUCK 
Name ___________________________________________ Date _________________
Diagram of the Heart
____________________________
______________________
_________________________
Name _________________________________________ Date _________________
Science Assessment – The Human Body
Match each of the following to the appropriate system.
1. __________ Arteries
A. Circulatory System
2. __________ Blood
3. __________ Bones
B. Digestive System
4. __________ Brain
5. __________ Breathing
C. Muscular System
6. __________ Capillaries
7. __________ Food
D. Nervous System
8. __________ Heart
9. __________ Joints
E. Respiratory System
10. __________ Large Intestines
11. __________ Lungs
12. __________ Movement (2)
13. __________ Muscles
14. __________ Nerves
15. __________ Oxygen Intake
F. Skeletal System
16. __________ Small Intestines
17. __________ Spinal Cord
18. __________ Stomach
19. __________ Veins
Good Luck 