1. Muscular System 600 Muscles

2. Science Keyterms Muscle Voluntary muscle Involuntary muscle
Skeletal muscle
Smooth muscle
Cardiac muscle
Tendon

3. Functions of Muscular System
Provide movement for the body
Produce heat
Helps with the movement of food through the digestive system
Helps you breath
Helps with the beating of your heart

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

5. Moving the human body
Muscle-an organ that contracts and gets shorter- this provides the force to move your body parts.
Muscles of the
body

6. Muscle Control Voluntary muscles- muscles that you are able to control
Examples are leg and arm muscles -most of the muscles that attach to bones
Involuntary Muscles- you can not move them consciously. They just keep working
Examples- heart , blood vessels

7. Types of Muscles-skeletal
Skeletal Muscles-muscles that move bones
Attached to bones by tendons
Most numerous in the body
Look striped or striated
Voluntary muscles – you can control when they move

8. Types of Muscles-Smooth Muscles
Smooth muscles- nonstriated
Involuntary – cannot control them consciously
Move the internal organs
Contract and relax slowly
Example- small intestine, stomach muscles

9. Types of Muscles-Cardiac Muscle
Cardiac muscle-found only in the heart
Involuntary – you cannot control when it beats
Striations
Contracts about 70 times a minute every day of your life.

10. Types of Muscles
3 types of muscles?

11. How Muscles Work How muscles work
Skeletal muscles-when one muscles contracts- another muscle relaxes
Muscles always pull- never push
Muscles use glucose – chemical energy
Produce thermal (heat) energy when they contract
Muscles that are not exercised become smaller
How muscles work

12. Muscles and bones work together
Skeletal system working together with the Muscular System
Working together
Let’s Review

13. How Muscles Work
When bundles of muscles are stimulated by nerve impulses, or signals, they ___contract____________, or shorten.
When they relax, the bundles stretch.

14. ______________________ ______________________ ______________________
Types of Muscles
Three Types of Muscle Tissue
______________________
______________________
______________________

15. What Muscles Do
___Muscle___movements help you _________, make your _______ beat, and move food through your digestive system.

16. Types of Muscles ___________________ are involuntary muscles.
_________________________
Muscles that act on the lining of the body’s passageways and hollow internal organs

17. Types of Muscles
______________________ is involuntary and is responsible for the contraction of your heart. Your heart beats 100,000 times each day.
_____________________
A type of striated muscle that forms the wall of the heart

18. Types of Muscles
Most of your muscle tissue is skeletal, and almost all _________________ are under voluntary control.
__________________________
Muscles attached to bone that cause body movements

19. What Muscles Do
Skeletal muscles work in pairs to produce movement.

20. Body Movements Flexing of the hamstring.
When you bend your knee, the quadriceps muscle relaxes and the hamstring muscle contracts.

21. Body Movements cont. Extension of the quadriceps.
When the leg is straight
the hamstring muscle
relaxes (stretched) and the quadriceps muscle contracts or shortens.