1. Muscular System Pump You Up !!!

2. ContractilityContractility - Muscles have the ability to contract only. IrritabilityIrritability - Muscles will respond to a stimulus. This usually results in a contraction. ConductivityConductivity - A stimulus will pass from one muscle fiber to another. Properties of Muscles:

3. Types of Muscles Skeletal - Striated Smooth Cardiac

4. Types of Muscles SKELETAL MUSCLES SKELETAL MUSCLES - Skeletal muscles are muscles that are directly attached to bones. These muscles are responsible for all of the movement our body can accomplish. When most people think of muscles, they think of skeletal muscles.

5. Types of Muscles SMOOTH MUSCLES SMOOTH MUSCLES - The smooth muscles are muscles that we don't have control of. They include muscles that surround organs including the stomach, lungs, and intestines. Because we cannot control them, they are called "involuntary muscles"

6. Types of Muscles CARDIAC MUSCLES CARDIAC MUSCLES - Cardiac muscles are only found in one place in your body...your heart. This involuntary set of muscles make up the chambers of your heart. They pump all day and night transporting blood throughout the body.

7. Structure of Muscle

8. Muscle Attachments Skeletal muscles, attached to bone by tendons, produce movement by bending the skeleton at movable joints.

9. Flexors Flexors - Muscles that bend a limb (elbow flexors) Extensors Extensors - straighten a limb (elbow extensors.) Abductors Abductors - Muscles which move a limb to the side, away from the body (hip abductors) Adductors Adductors - those which move a limb sideways toward the body (hip adductors.) Other functional groups are elevators, depressors, & rotators. Muscles by Function Muscles by Function

10. Bending force is a pull by contraction - this makes the muscle shorter Muscles cannot push To change directions you contract a different set of muscles Muscle Contraction

12. During muscle contraction the actin and myosin filaments slide over each other and the length of the sarcomere shortens

13. Head Muscles 3. Temperalis 5. Depressor Mandibulae 30. Mylohyoid

14. Dorsal Trunk Muscles 10. Latissimus dorsi 11. Longissimus dorsi 16. coccygeoliliacus 13. anconeus 6. dorsalis scapulae 14. external oblique 16 13

15. Ventral Trunk Muscles 7. deltoid 9. pectoralis 13.rectus abdominis 14.external oblique

16. Leg Muscles 20. triceps femoris (iliofibularis) 29. biceps femoris 28. semimembranous 22. sartorius 21. adductor magnus 24. gracilis major 25. gracilis minor 26. gastrocnemius 2. peroneus