tricep!
adenosine triphosphate (ATP)
Triceps
The muscle doesn't lengthen to exert a force. There is actually a muscle on the other side of the bone, that is contracting, exerting the force. Example, most everyone knows of the Bicep (the big muscle on the your arm that guys like to flex for the ladies). Well, the tricep is on the other side (on the back of your arm, connecting to the elbow) and that muscle contracts in order to extend your arm outwards.
The biggest and most visable is Pectoralis major; that is the "pecks" in slang terms.
ATP is the source of chemical energy used to power a muscle cell in your arm.
The pectorals major
Teres major muscle
Latissimus dorsi - this is the largest back muscle that runs from the lower back to the upper arm bone. It pulls the upper arm towards the body and acts as an internal rotator of the upper arm.
No. The triceps is an upper arm muscle
The teres major muscle is considered to be antagonistic to the teres minor muscle. The teres major muscle is a larger muscle located in the upper arm that works to extend, medially rotate, and adduct the arm, while the teres minor muscle is a smaller muscle that works to laterally rotate the arm.
Which muscle? The biceps, at the front of the arm, get shorter, and the triceps, at the back, get longer.
The triceps is the muscle at the back of your upper arm. It works to straighten your arm at the elbow.Yes, the tricep is located on the back of your arm in between your elbow and shoulder, closer to your shoulder though.
latissimus dorsi.
The bicep is the front part of your arm. The tricep is the muscle in the back part of the arm.
The muscles that mainly pull arms backward are the triceps. These are muscles that are found on the back of the upper arm.
pectoralis major
The Pectoralis Major muscle attaches form the sternum, ribcage, and clavicle to the humerus. They share the function of Adducting the arm (pulling it down and in towards the body) when working with certain muscles of the back (like the latismuss dorsi). When working alone they pull the arm forward (from pointing out sideways to pointing forwards) the position of the "flexed" shoulder.