louis tomlinson is my boo im in love with him an all him perfect things srry i dont know the answer this is all i know i love him he is crazy wack job just like me u see dirctioners are taking over answer.com too soon we will run the planet with alittle help from our boys
last though
i love louis he is mine and no one elses so ha to bad for you
the pectoralis major and the pectoralis minor pull the arm across and the deltoid and trapezius help hold the arm up
Pectoralis major, teres major and lattisimus dorsi
Sternocleidomastoid
Pec major
shoulder
Most muscles in the body have "counterparts", one pulls and your leg curls up, the other pulls and the leg straightens. They would be on opposite sides of your leg. The "biceps" are the upper arm top muscle, and the tri-ceps (I think) is the upper arm bottom muscle. They work in conjunction to let you 'curl a barbell'' or do a chin-up.
Muscles can only pull not push. That is why they work in pairs an example is your tricep and bicep, your bicep pulls your arm up and your tricep pulls your arm down.
The muscles that mainly pull arms backward are the triceps. These are muscles that are found on the back of the upper arm.
It depends. But, the triceps are 2/3 of your upper arm.
skeletal muscle
Yes- it actually "pulls up" on the jaw.
The biceps brachii muscle will contract, pulling the lower arm up.
it hurts
Let's take your arm as an example. you have the bicep and the tricep. all muscles come in pairs. they can only push, not pull. your bicep connects to the top of your hinge joint in your elbow, and your triceps connect to the bottom. your bicep pulls to bend your arm, and your triceps pulls to straighten your arm. Was that a too complicated answer?
There is not a single muscle that rotates the upper arm. The name of the muscle that contributes in rotation of the upper arm is deltoid muscle.
AnswerThough not all muscles work in pairs, the general principle is that one muscle moves a bone one way, and the other muscle moves it the opposite way. Why? Because muscles can only pull, not push.For example, when you bend your arm, the biceps muscle pulls. When you want to straighten it, the biceps muscle cannot push it back. Instead, the triceps muscle that's on the back of the arm pulls in the other direction.