1. This simple process occurs in just a few thousandths of a second!!!
Muscle Contraction
This simple process occurs in just a few thousandths of a second!!!
Summary New Summary:McGraw Hill
Video Showing AChE
PROJECT TIME!!!
Student Example
Beth Dietzen: Prezi
Sam B photostory
Prezi
Youtube rap (in a & p - bryce)

3. Contraction of a Skeletal Muscle
“all or none”
Different combinations
Force
Need for ATP

4. 3 pathways to get ATP (diagram p 190)
Bonds of ATP
4-6 seconds
1. Direct phosphorylation of ADP to ATP
- Creatine phosphate (CP) - converts ADP to ATP directly
Aerobic respiration occurs in mitochondria
3. Anaerobic respiration fast but not as efficient as aerobic

5. Muscle Fatigue and Oxygen Debt “Why do you get tired when you workout
Muscle fatigue: (Video: Ironman)
Used Oxygen must be “repaid”

6. Muscle Tone and Exercise
Muscle strains/tears
Microtears = sore

9. What is a muscle cramp? Causes?

10. DONE

11. Aerobic Exercise Effects of Exercise on Muscle
Fast twitch (more CP) and slow twitch fibers (more mitochondria)
Small increase in muscle cell size
Store more oxygen
More Increase flexibility, mitochondria, coordination
Resist fatigue

12. Resistance Exercise Effects of exercise on muscle
Isometric
Increase connective tissue
Increase muscle cell size (myosin) and strength
More contractile filaments

13. Both types together are BEST
Results of increased muscle use:
Increase in muscle strength and efficiency
Muscle becomes more fatigue resistant
Healthy heart (enlarges)
improves digestion
bones stronger
lungs more efficient
clear fat deposits from walls of blood vessels