Muscle Contraction
4 practice questionsAnatomy & PhysiologyStep-by-step solutions
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1
According to the sliding filament theory, muscle contraction occurs when:
A.Actin filaments shorten
B.Myosin pulls actin filaments toward the sarcomere center
C.Bones shorten
D.Tendons dissolve
2
Skeletal muscle is described as 'voluntary' because it is:
A.Controlled automatically
B.Under conscious control
C.Found only in the heart
D.Not innervated
3
According to the sliding filament theory, muscle contraction occurs as:
A.Bones shorten
B.Actin and myosin filaments slide past one another
C.Muscle cells divide
D.Tendons dissolve
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