Muscle Contractions

Concept: Skeletal Muscle Contractions

5m

Concept: Contraction Steps

6m

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

1m

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

1m

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

1m

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

1m