1. Muscular system
Chapter 6

2. Types of muscle tissue
skeletal
smooth
cardiac

3. Skeletal muscle anatomy basics
Muscle fiber (= muscle cell)
Fascicle
Muscle (the whole organ)
Tendons

4. (wrapped by perimysium) Epimysium
Figure 9.1 Connective tissue sheaths of skeletal muscle: epimysium, perimysium, and endomysium.
Bone
Perimysium
Endomysium
(between individual
muscle fibers)
Muscle fiber
Fascicle
(wrapped by perimysium)
Epimysium
Tendon
in middle of
a fascicle
Blood vessel
(a)
(b)

5. Microscopic anatomy of individual skeletal muscle fiber

7. The sarcomere
the functional unit of skeletal muscle
made of:

8. Actin regulatory proteins
troponin
tropomyosin

9. Sliding filament model of contraction: the contraction

11. Remember the splitting of ATP?
Results in an ADP molecule, a P group, and energy

12. Sliding filament model of contraction: the contraction

15. What happens if. . .
there is no Ca2+?
there is no ATP?

16. What causes muscle contraction in the first place?
neuromuscular junction

17. Neuromuscular junction

18. Muscle coordination
synergists
antagonists

19. Smooth muscle

20. Pathologies
Muscular dystrophy