The sequence of events that cause a sarcomere to contract can be summed up in the correct order as
A) detach, extend, contract, attach.
B) attach, pull, extend, contract.
C) detach, extend, attach, pull.
D) attach, contract, detach, recoil.

Question

Quizplus · Accepted Answer

The correct sequence is detach, extend, attach, pull. This describes the cycle of myosin heads in muscle contraction: they detach from actin, extend to a new position, attach to actin, and then pull to contract the sarcomere.

The Sequence of Events That Cause a Sarcomere to Contract