The Muscular System
Notes pg 65
Did you get your tickets???
… to the GUN show???
• Functions:
-move your bones
-move materials through
your organs
- Produce heat
Can you think of an
example of how muscles
maintain HOMEOSTASIS in
the body???
Types of Muscles
What are the 3 types of muscle? (look on pg 905
for the answer)
1. Skeletal
2. Smooth
3. Cardiac
Glue on pg 64
Can you move all your muscles?
• Some muscles are voluntary, some are
involuntary
• Voluntary – you have conscious control
• Involuntary – NOT under conscious
control, works on its own
pg 64 • Skeletal Muscles
• Attached to the
bones
• Voluntary
Smooth Muscles
• Found in digestive
system (stomach,
intestines), and in
blood vessels.
• involuntary
Cardiac Muscles
• Found only in the
HEART
• Involuntary
• Which muscle do
you think is the
strongest?
Back to pg 65
• - Muscle contraction requires energy and
makes heat
• Muscle Fatigue
- If muscles use up all their energy = they get
tired and start using stored energy
LIKE FAT
Problems with the Muscles
• Cramps – are usually caused by your muscles
getting too tired, or dehydrated
Steroids
• Steroids - help build muscle, but they can
damage the body