1. Muscular System 600 Muscles

2. 3 types of muscles
Smooth Muscles- Which include the muscles of internal organs and blood vessels. These muscles move involuntary.
Cardiac Muscle- Found only in the heart and also involuntary.
Skeletal Muscles- Are voluntary and help you move.

3. Muscle Movement Involuntary- Automatically move without you knowing.
Voluntary- Brain sends message to muscle. You control the movements.

4. Skeletal Muscle Skeletal Muscles-muscles that move bones
Attached to bones by tendons
Most numerous in the body
Look striped or striated
Voluntary muscles
Makes up 90% of your muscles

5. Involuntary – Smooth Muscle
Smooth muscles- nonstriated
Involuntary
Move the internal organs
Contract and relax slowly
Example- small intestine
Makes up 7-8% of your muscles.

6. Cardiac Muscle Cardiac muscle-found only in the heart Involuntary
Striations
Contracts about 70 times
a minute every day of your life.
Makes up 3% of your muscles.
By age 70 heart contracts 2.5s
billions times (assume resting heart beat).

8. Occuli
Facial Buccinators
Sternomastoid
Pectoralis Major
Bicep Brachii
Abdominals
External Oblique
Sartorius
Quadriceps
Extensor Digitorum
Tibialis Anterior

9. Types of Muscles cont. Cardiac Muscles- Only found in the heart.
Involuntary.
Makes up 3% of your muscles.
By age 70 heart contracts 2.5 billion times (assume resting heart beat).

10. Types of Injuries Strain- Muscle “pull” or “strain”
Tearing a muscle fiber(s), followed by bleeding or swelling of muscle
Muscle Cramp- Prolonged contraction of muscle, ion imbalance

11. Muscle Terms Flexion- Movement that reduces a joint angle
Extension- A movement that increases a joint angle

12. Body Movements
Flexing of the hamstring.

13. Body Movements cont.
Extension of the quadriceps.

17. Muscle Pairs
Your muscles work in teams to move your body. An example of this is your Bicep and Tricep.

18. Trapezius
Deltoid
Tricep
Latissimus Dorsi
Gluteus Maximus
Hamstring
Gastrocnemius

19. Skeletal muscles-when one muscles contracts- another muscle relaxes
Muscles always pull-
never pushes
Muscles use glucose
Produce thermal energy when they contract
Muscles that are not exercised become smaller

20. Origin & Insertion Origin: the fixed end of the muscle
Insertion – the moving end of the muscle

21. Muscles Revision Name two functions of the muscular system
Name the three types of muscle tissue found in the body
The muscle's ability to contract is affected by a number of factors. State or list at least 4 of these factors.
What is muscle fatigue?

22. How would you describe the terms origin and insertion?
Describe the movement eversion
Describe the movement adduction
Describe the movement flexion
Describe the location of gastrocnemius

23. Describe the location of the hamstrings group of muscles
Describe the location of flexor carpi ulnaris and its action

26. !