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Name __________________________
Monday, 11-28-16
Packet # 2 - 14
7th Science - ________
AIM: Define and describe the muscular system. Explain how the
muscular system and skeletal systems work together.
Quote of the Day: “A dream doesn't become reality through magic; it
takes sweat, determination and hard work.” - Colin Powell
Do Now
Read/annotate the text before answering the questions that follow.
Key definition:
Vertebrate: Animals with an internal skeleton made of bone
The muscular system is an organ system consisting
of skeletal, smooth and cardiac muscles. It permits movement of the body, maintains
posture, and circulates blood throughout the body. The muscular system in vertebrates is
controlled through the nervous system, although some muscles (such as the cardiac
muscle) can be completely independent. Together with the skeletal system it forms
the musculoskeletal system, which is responsible for movement of the human body.
There are three different types of muscles: skeletal muscles, cardiac or heart muscles,
and smooth muscles. Muscles provide strength, balance, posture, movement and heat for
the body to keep warm.
1. What type of muscles make up the muscular system?
 ____________________________________
 ____________________________________
 ____________________________________
2. What does the muscular system do?
 It permits ___________________________________________________
 It helps us to maintain ___________________
 It circulates _________________________________________________
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3. Name the three different types of muscles:
 _____________________________
 _____________________________
 _____________________________
4. Muscles provide
__________________________________________________________________
__________________________________________________________________
After Do Now Review – With a Partner – Read the following line from the text
again:
The muscular system in vertebrates is controlled through the nervous system, although
some muscles (such as the cardiac muscle) can be completely independent.
What does it mean for a muscle to be independent? Why would a cardiac muscle be
independent? Be prepared to discuss.
PPT – Take notes in the spaces provided while we discuss the PowerPoint
The muscular system creates the force that enables the body to move and carry out
different functions related to movement
Muscles are all over your body and cause its movement!
There are TWO types of muscle
1. Involuntary: muscles that work automatically without you telling them to
(breathing, eating, etc.)
EXAMPLE: Your Heartbeat
2. Voluntary: muscles that you have to tell to move
EXAMPLE: Smiling 
Three types of muscle tissue
Type
Voluntary/Involuntary
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Skeletal Muscles
The only muscle you can control
Includes your muscles in your arms and legs, as well as facial muscle that control your
smile and eye lids
Smooth Muscles
You do not control these muscles
Involuntary
Includes muscles in your stomach that digest food
Cardiac Muscles
You cannot control this muscle
Includes the muscle tissue that make up your heart
Muscles work in pairs.
As one muscle expands, the other contracts
Similar to your lungs and the diaphragm
**Insert Khan Academy
INDEPENDENT PRACTICE
PART 1: Fill-in-the-blank
1. The ___________________________________ system
creates the force that enables the body to
move and carry out different functions
related to movement.
TERM BANK
Homeostasis
Muscular
Involuntary
Skeletal
Pairs
Movement
Voluntary
Expands
Cardiac
Smooth
2. ____________________________ muscles are involuntary and include muscles in your
stomach that digest food.
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3. Muscles work in ___________________, and as one muscle ________________________, the
other contracts.
4. ___________________________________ muscles are muscles that work automatically
without you telling them to work (breathing, eating, etc.).
5. The only type of muscle you can control is your _______________________________
muscles, which include muscles in your arms and legs, as well as face muscles.
6. The muscles in your heart are known as _____________________ muscles, and you
cannot control them.
7. All the body’s organs systems work together to ensure you are alive and well in a
process known as ________________________________.
8. Muscles are all over your body and cause its __________________________.
9. __________________________________ muscles are muscles that you have to tell to move,
like your face muscles when you smile.
PART 2: True/False. For each statement that is false, RE-WRITE
THE ENTIRE STATEMENT so that it is true.
10. ______________ Muscles work in pairs, and as one muscle expands, the other
contracts.
11. ______________ Involuntary muscles are the muscles that you have to tell to move,
like smiling.
12. ______________ The circulatory system creates the force that enables the body to
move.
13. ______________ Cardiac muscle makes up the heart and is involuntary.
14. ______________ Skeletal muscles are the only type of muscles that are voluntary.
15. ______________ Skeletal muscles include muscles in your stomach that digest food.
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PART 3: Multiple-choice. Use MCS to answer the following choices.
16. Which of these is NOT a job of the muscular system?
a. Movement
b. Posture
c. Strength
d. Making blood cells
17. These are the heart muscles
a. Skeletal
b. Voluntary
c. Smooth
d. Cardiac
18. Which describes the three body systems that work together to move your hand?
a. Circulatory, muscular, respiratory
b. Nervous, muscular, skeletal
c. Skeletal, circulatory, nervous
d. Muscular, circulatory, skeletal
PART 4: Fill in the blanks describing the three types of muscle
tissue below.
Smooth
Name
Image
Moveme
nt
Exampl
e
Voluntary
Heart tissue
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