corabrachialis, biceps brachii, deltoid, pectoralis major
it extends the forelimb.
brachialis and brachii
to make it tight
Your hamstring muscles.
You can flex skeletal muscles voluntary. These are the muscles you can control and move consciously. Smooth muscles and cardiac muscles, which work involuntarily, cannot be consciously flexed.
Hamstring
The sternocleidomastoid muscles are the ones that flex when the intercostals are flexed. This will also cause the scalene muscles to flex.
To flex your chest, you tighten the muscles that are in that area. This might include your arms or back as well, but you tighten the muscles in your chest and abs.
Muscles can contract and shorten
i done no
You flex your muscles to do this and these pull on the tendons which link the muscles to the bones.
In both cats and humans, the biceps brachii and the supinator muscles are responsible for rotating the forelimb. The biceps brachii primarily facilitates supination, turning the palm upward, while the supinator muscle assists in this action. Together, these muscles enable a range of rotational movements necessary for various activities.