1. Muscular System

2. Functions of Muscle Tissue Produce Movement

3. Functions of Muscle Tissue Maintains Posture & Body Position

4. Functions of Muscle Tissue Supports Soft Tissues

5. Functions of Muscle Tissue Guards Entrances and Exits Swallowing Urinating Defecating

6. Functions of Muscle Tissue Maintains Body Temperature

7. 3 Types of Muscle Tissue SkeletalSmoothCardiac

8. Skeletal Muscle:Structure

9. Skeletal Muscle: Function Voluntary movement and locomotion Facial expressions

10. Skeletal Muscle: Location

11. Cardiac Muscle: Structure

12. Cardiac Muscle: Function

13. Cardiac Muscle Location

14. Smooth Muscle: Structure

16. Cross-section of intestines showing longitudinal and circular layers Figure 10.12b

17. Smooth Muscle Function

18. Smooth Muscle: Location

19. Structure of a Skeletal Muscle Muscle Muscle Fascicles Muscle Fibers (Cells)

20. Structure of a Skeletal Muscle Fiber (Cell) Myofibrils

21. Structure of a Sarcomere Sarcomeres: Thick and Thin Filaments

22. Structure of a Skeletal Muscle Fiber (Cell) Figure 10.4b

23. Structure of a Skeletal Muscle Fiber (Cell) Figure 10.8

24. Summary of Structure of Skeletal Muscles Muscle Fasicles Muscle Fiber (Cell) Myofibril Sarcomere Myofilaments

25. Neuromuscular Junctions Figure 10.4d

26. Neuromuscular Junctions Figure 10.4d

27. Neuromuscular Junctions Figure 10.4d

28. Contraction of a Skeletal Muscle (Sliding Filament Theory) Figure 10.6a

29. Contraction of a Skeletal Muscle (Sliding Filament Theory)

30. Summary of Sliding Filament Mechanism Figure 10.6a

31. Muscle Attachments Most skeletal muscles run from one bone to another. Most muscles are attached to bones by tendons or aponeuroses

32. Muscle Attachments Origin = Point of attachment of a muscle that is least movable Insertion = point of attachment of a muscle that is most movable

33. Muscle Attachments: Connective Tissues Tendons Aponeuroses

34. Interactions of Skeletal Muscles in the Body Muscles can exert a pull but not a push. Thus, muscles are typically arranged in pairs: one pulls a bone in one direction and the other pulls it in the opposite direction.

35. Interactions of Skeletal Muscles Prime mover (agonist) – has major responsibility for a certain movement Antagonist – opposes or reverses a movement Synergist – helps the prime mover