9 Questions
What initiates the contraction of muscles?
Action potential
What is released from the sarcoplasmic reticulum during muscle contraction?
Ca++
What is the basic unit of muscle contraction called?
Sarcomere
What is the membrane of a muscle cell responsible for regulating the entry and exit of materials?
Sarcolemma
Which structure in a muscle cell stores the calcium ions needed for muscle contractions?
Sarcoplasmic reticulum
What binds to actin and causes muscle contractions in a muscle cell?
Thick filament
What is the membrane of a muscle cell responsible for regulating the entry and exit of materials?
Sarcolemma
Which structure in a muscle cell stores the calcium ions needed for muscle contractions?
Sarcoplasmic reticulum
What binds to actin and causes muscle contractions in a muscle cell?
Thick filament
Test your knowledge about the sliding filament mechanism of muscle contraction, including the role of actin, myosin, sarcomeres, and the initiation and relaxation of muscle contraction.
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