Download Muscular System

Muscular System
Muscle Movement
Involuntary- Automatically move ________ you knowing.
Voluntary- Brain sends message to muscle. You ________ the
movements.
Types of Muscles
Smooth Muscles- include the muscles of internal organs and
__________vessels. These muscles move involuntary.
Cardiac Muscle- Found only in the heart and also ____________.
Skeletal Muscles- Are voluntary and help you move.
Smooth Muscle
Digestive organs
Makes up 7-8% of your ____________
Involuntary
Cardiac Muscles
Only found in the ___________.
Involuntary.
Makes up 3% of your muscles.
By age 70 heart contracts 2.5 billion times (assume resting heart beat).
Skeletal Muscles
Makes up ________ of your muscles.
Voluntary- These are the muscles that ________ can move.
Types of Injuries
Strain- Muscle “pull” or “strain”
Tearing a muscle fiber(s), followed by bleeding or swelling of
muscle
Muscle Cramp- Prolonged _______________of muscle
Muscles and Movement
Muscle fibers line up and pull the tendon attached to the bone to cause
movement.
Muscles can only contract and ___________.
Muscle Pairs
Muscles can only contract & relax. For movement muscle fibers line up and
pull the tendon attached to the _____________.
Your muscles work in teams to move your body. As one group of
_________ is contracting another group is relaxing. An example of this is
your Bicep and Tricep.
Systems Working Together
1. Our brain sends a ___________
2. The message travels down your spinal cord
3. The motor neuron fires a message
4. The muscle contracts.
5. The muscle shortens __________on the tendon
6. The bone connected to the tendon moves