Sliding Filament Theory

Question 1

Step 1)

Answer 1

Myosin and actin are arranged in sarcomeres

Question 2

Step 2)

Answer 2

An influx of Ca2+ ions enter the muscle cell exposing binding sites

Question 3

Step 3)

Answer 3

Actin and myosin form crossbridge

Question 4

Step 4)

Answer 4

Power stroke occurs using ATP

Question 5

Step 5)

Answer 5

Myosin pulls actin towards sarcomere centre

Question 6

Step 6)

Answer 6

Sarcomere contracts resulting in movement