Sliding Filament Theory
Dr. R. Venkatesan
M.Sc (Ex.Phy)., M.Sc (Psy)., M.P.Ed.,
M.Phil.,PGDY., Ph.D.
Prepare for your exams
Study with the several resources on Docsity
Earn points to download
Earn points by helping other students or get them with a premium plan
Guidelines and tips
Prepare for your exams
Study with the several resources on Docsity
Earn points to download
Earn points by helping other students or get them with a premium plan
Community
Ask the community
Ask the community for help and clear up your study doubts
University Rankings
Discover the best universities in your country according to Docsity users
Free resources
Our save-the-student-ebooks!
Download our free guides on studying techniques, anxiety management strategies, and thesis advice from Docsity tutors
Muscle Contraction: Filament Theory, Energy, Fatigue, Slides of Biology
An in-depth exploration of the Sliding Filament Theory of muscle contraction, discussing the molecular basis of contraction, energy sources for contraction, muscle fatigue causes, fiber contraction speed, and coordinating fibers. figures and explanations of excitation-contraction coupling, phosphocreatine, muscle fatigue locations, fiber types, and length-tension relationships.
What you will learn
- What causes muscle fatigue?
- What are the steps involved in the Sliding Filament Theory of muscle contraction?
- What are the energy sources for muscle contraction?
- What are the differences between fast-twitch and slow-twitch muscle fibers?
- How does the length-tension relationship affect muscle contraction?
Typology: Slides
2021/2022
1 / 14
This page cannot be seen from the preview
Don't miss anything!
Related documents
Partial preview of the text
Download Muscle Contraction: Filament Theory, Energy, Fatigue and more Slides Biology in PDF only on Docsity!
Sliding Filament Theory
Dr. R. Venkatesan M.Sc (Ex.Phy)., M.Sc (Psy)., M.P.Ed., M.Phil.,PGDY., Ph.D.
Contraction Sequence: Sliding
Filament Theory
Figure 12-9 (steps 1 & 2): The molecular basis of contraction
Contraction Sequence: Sliding
Filament Theory
Figure 12-9 (steps 5 & 6): The molecular basis of contraction
Skeletal Muscle Contraction:
Mechanism
Figure 12-11a: Excitation-contraction coupling
Energy for Contraction: ATP &
Phosphocreatine
- Aerobic Respiration
- Oxygen
- Glucose
- Fatty acids
- 30-32 ATPs
- Anaerobic Respiration
- Fast but
- 2 ATP/glucose
- Phosphocreatine ATPs
Energy for Contraction: ATP &
Phosphocreatine
Figure 12-13: Phosphocreatine
- Rate
- 2-3 times faster
- SR uptake of Ca2+
- ATP splitting
- Anaerobic/Fatigue easily
- Power lifting
- Fast/delicate
- Sprint
Fiber Contraction Speed:
Fast Twitch
Fiber Contraction Speed: Fast Twitch
Figure 12-15: Fast-twitch glycolytic and slow-twitch muscle fibers
Coordinating the Fibers: Force of
Contraction
Figure 12-16: Length-tension relationships in contracting skeletal muscle
- Excitation and Twitch
- Length–Tension: more crossbridges: more tension
Coordinating the Fibers: Summation to
Tetanus
Figure 12-17: Summation of contractions