According to the sliding-filament model of muscle contraction, a sarcomere contracts when its ________.
A)thick filaments slide across the ends of the sarcomere
B)thin filaments slide across the ends of the sarcomere
C)thin and thick filaments slide further away from each other
D)thin and thick filaments slide past each other

Question

Quizplus · Accepted Answer

In the sliding-filament model, muscle contraction occurs when the thin (actin) and thick (myosin) filaments slide past each other, shortening the sarcomere.

According to the Sliding-Filament Model of Muscle Contraction, a Sarcomere