structures & functions muscular system. all of the muscles that let you move. an organ system...
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STRUCTURES & FUNCTIONS
Muscular System
Muscular System
All of the muscles that let you move.An organ system whose primary function is
movement and flexibility.
Muscle Action
Read all directions and complete the Voluntary vs. Involuntary Muscle Lab
Review Activity
Muscles can either be ___________ or ___________. Some can be __________.
Meaning?Some muscles work without us trying to
move them, while others work only when we want them to move. There are some muscles, however, that can do both.
If all muscles rested at the same time, you would collapse!
Somewhere in your body, there are always muscles working.
Take a Break!
A Resistance Exercise break…Do 5 push ups.Then return to your desk and be ready to
listen.
Kinds of Muscle
Watch the video and identify and define (in your spiral) the kinds of muscle found in your body.
http://kidshealth.org/kid/closet/movies/MSmovie.html?tracking=59983_G
Take a Break!
An Aerobic Exercise Break…Jog in place for 30 seconds.Then return to your seat and be ready to
listen.
Kinds of Muscle
Cardiac Muscle – Only found in the heart!Smooth Muscle – Lines the walls of the
digestive tract and blood vessels.Skeletal Muscle – Attached to bones for
movement.Open your book to page 12 and draw a
picture in your notes of each of the types of muscles.
Take a Break!
A Resistance Exercise Break…Pick up a book and do 10 bicep curls. Hold
the book with both hands in front of you, bend then straighten your hinge joints (elbows).
Skeletal Muscles
Tendons – Attach skeletal muscles to bones.Flexor Muscle – Skeletal muscle that contracts
to bend a body part.Extensor Muscle – Skeletal muscle that
contracts to straighten a body partThe flexor and extensor muscles work together
in pairs to move body parts. Example: The biceps muscle contracts to bend your arm, while the triceps muscles relax, and the triceps muscle contracts to straighten your arm, while the biceps muscles relax.
Take a Break!
An Aerobic Exercise break…Carefully walk 5 laps around the classroom.Then return to your seat and be ready to
listen.
Staying Strong
What are the 2 different types of exercise you can do to keep your muscles strong?
Can you define each one? (think about the different breaks you have taken throughout today’s lesson)
Resistance Exercise – works against weight or resistance to strengthen muscles
Aerobic Exercise – moderately intense activity that increases endurance.
Muscular Section Quiz
Everyone in your group must answer the question(s) first.
Group members can discuss answers and share reasoning for answers until all agree
One person will bring the paper to me to find out how many points earned and get feedback from me
Take feedback to group, and answers can be changed if needed
Repeat steps for next round, but a different person will come up to me