Flexion
muscle cells...
Depression results when the muscle fibers of the diaphragm contracts.
shortends
antagonistic muscle action.
A muscle becomes shorter when it contracts.
A muscle that contracts shortens whereas a muscle that relaxes lengthens.
When one muscle in a pair contracts the other expands.
Flexion
shortens
shortens
The muscle that contracts when the leg is extended at the knee is call the gastrocnemius muscle
When the bicep contracts the triceps relax
Relaxes
When the muscle contracts, it gets shorter. When it relaxes, it gets longer.
The site that undergoes most of the movement when a muscle contracts.
circular muscle