Lecture 17 - Muscle II

Excitation-contraction coupling (cont'd)

Contraction (conclusion)

Tropomyosin and troponin

Molecular events in cross-bridge cycling

Mechanics of muscle contraction

Twitch contractions

Isometric

Isotonic

Tetanic contractions

Isometric

Terms to Know

Tropomyosin
Troponin

Myosin-ATPase

Isometric contraction
Isotonic contraction
Twitch contraction
Tetanic contraction (tetanus)

Latent period
Contraction time
50% relaxation time

Force-velocity curve

Readings

Lectures 16-18:

Chapter 8, pages 314-342