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Topic 17Biology

B3.3 Muscle and motilityHL

Skeletal muscle contraction by the sliding-filament mechanism, locomotion in different animal groups, and seed dispersal.

Practice questions
1

Skeletal muscle and sliding filamentsHLSign up

Sarcomere structure and sliding-filament model · Motor units, joints, and skeletons

35 min
2

Locomotion and dispersalHLSign up

Joint range and intercostal antagonism · Reasons for locomotion and marine mammal swimming

35 min