Asked by Brody Chester on May 03, 2024
Verified
In muscle contraction,
A) the actin filaments become shorter.
B) the actin filaments become longer.
C) the myosin filaments become shorter.
D) the myosin filaments become longer.
E) neither of the filaments change length.
Actin Filaments
Actin filaments are thin, flexible fibers found in all eukaryotic cells, playing key roles in cell movement, shape, and structure by forming part of the cytoskeleton.
Myosin Filaments
Thick filaments within muscle cells that interact with actin filaments to cause muscle contraction through a sliding filament mechanism.
Muscle Contraction
The process where muscle fibers shorten, generating force, following activation by a nerve impulse.
- Describe how muscles contract and the biochemical processes involved in muscle contraction and relaxation.
Verified Answer
MV
Marco ValdezMay 09, 2024
Final Answer :
E
Explanation :
During muscle contraction, neither the actin nor the myosin filaments change length. Instead, they slide past each other, which shortens the overall length of the muscle fiber.
Learning Objectives
- Describe how muscles contract and the biochemical processes involved in muscle contraction and relaxation.