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Chapter 9: MUSCULAR SYSTEM Chapter 9 Bio 203.

Published byΝίκανδρος Κορωναίος Modified over 6 years ago

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Presentation on theme: "Chapter 9: MUSCULAR SYSTEM Chapter 9 Bio 203."— Presentation transcript:

1 Chapter 9: MUSCULAR SYSTEM Chapter 9 Bio 203

2 Skeletal Chapter 9 Bio 203

3 Cardiac Chapter 9 Bio 203

4 Smooth Chapter 9 Bio 203

5 Chapter 9 Bio 203

6 Chapter 9 Bio 203

7 Chapter 9 Bio 203

8 Chapter 9 Bio 203

9

10 Chapter 9 Bio 203 Relaxed muscle Contracting muscle Contracting muscle
A band I band A band Z disk H zone Z disk H zone Z disk Myosin myofilament Actin myofilament Sarcomere Contracting muscle Z disk Z disk Z disk Actin myofilaments move toward each other Sarcomere shortens as Z disks move toward each other Contracting muscle H zone narrows I band narrows A band does not narrow Fully contracted muscle I band A band A band H zone disappears I band narrows further A band remains unchanged Chapter 9 Bio 203

11 Video – Sarcomere Shortening
Chapter 9 Bio 203

12 Chapter 9 Bio 203

13

14

15 Cross Bridge Movement Chapter 9 Bio 203

16

17 Chapter 9 Bio 203

18 Recruitment Chapter 9 Bio 203

19 Chapter 9 Bio 203

20 Suprathreshold recruitment Chapter 9 Bio 203

21 incomplete tetanus complete tetanus (quiver) twitch Chapter 9 Bio 203

22 fatigue Chapter 9 Bio 203

23 Sources of ATP in Muscles
Chapter 9 Bio 203

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