Muscle Contractions

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Overview of the Cytoskeleton
Intermediate Filaments
Kinesins and Dyneins
Cilia and Flagella
Microtubules and Cell Division
Actin Filaments
Actin Based Movement
Muscle Contractions

Concept #1: Skeletal Muscle Contractions

Concept #2: Contraction Steps

Practice: Which of the following is not a structure of the sarcomere?

Practice: Which of the following structures is composed of actin, but no myosin?

Practice: When calcium binds to troponin, what happens to tropomyosin?

Practice: When a cross-bridge structure is formed during a muscle contraction, the band lengths shorten and contract.