During skeletal muscle contraction,adjacent _________ are pulled closer together as the _______ between them shorten.
A)A bands;I bands
B)I bands;A bands
C)Z disks;A bands
D)Z disks;M lines

Question

Quizplus · Accepted Answer

During skeletal muscle contraction, adjacent A bands are pulled closer together as the I bands between them shorten. This is because the actin (thin) filaments slide over the myosin (thick) filaments, causing the sarcomere to shorten, which results in muscle contraction. The A bands remain the same width because they are composed of myosin filaments, while the I bands, which are the lighter areas containing only actin filaments, shorten as the filaments slide past each other.

During Skeletal Muscle Contraction,adjacent _________ Are Pulled Closer Together as the _______

During Skeletal Muscle Contraction,adjacent ___ Are Pulled Closer Together as the _