A muscle fiber gets a signal to move from a nerve and then it moves!
Use dumbbells, choose a sensible weight, hold them with your fingernails facing you and your arms bent at the elbow, and slowly lift your arms down and up.
The biceps muscle is a striated or skeletal muscle.
Mainly targets the Biceps Brachii.
im gonna say the Bisceps...
the tricep
Skeletal.
A muscle that opposes the actions of another. =] A muscle that opposes the actions of another. =]
Antagonist muscles are muscles that counteract the action of agonist muscles.Some examples of antagonist muscles are:Triceps work opposite of biceps.Hamstrings works opposite of quadriceps.The sternocleidomastoid works opposite of the deltoids.
biceps and triceps
Biceps/triceps.
The biceps brachii is the muscle on the front of your upper arm. Its purpose is to pull bend your arm at the elbow (flexion).It is one of an antagonistic pair of muscles. The other muscle is the triceps brachii on the back of the upper arm. It straightens (extends) your arm at the elbow.The biceps are used to flex the lower arm up to the upper arm. They also allow the wrists to suppinate.It helps in flexioning the forearm against the arm
While one muscle contracts, the other muscle in the pair returns to its original length. The main muscle that bends your upper arm is called the Biceps brachii. The action is called flexion at the elbow. This muscle is on the "front" of the arm. The muscle that acts against this one is called the Triceps brachii. Its' action is extension at the elbow. This muscle is on the "back" of the arm. See the link below:
Antagonistic pair is a combination of agonist and antagonist muscles that only one contracts and the other one relaxes. The biceps in a human body are an example of it.
Antigonistic Pairs- The meaning of an antagonistic pair is only one muscle can work at a time. For Example: Biceps and Triceps (in your arm)
When you bend your elbow, the biceps muscle contracts. At the same time the antagonist muscle, that is the triceps muscle relaxes in synchronized manner. Vise verse action take place, when you straighten the arm at the elbow. Triceps contracts and biceps relaxes.
The biceps and triceps are muscles. They flex and extend the forearm, respectively, so they are considered antagonists.
Examples are the Quadricep and the Hamstring, or the Bicep and the Tricep. Without the pair muscle, once an action was carried out, there would be no way to undo it.
Perhaps you mean antagonist and agonist muscles often occur in pairs, called antagonistic pairs. As one muscle contracts, the other relaxes. An example of an antagonisic pair is the biceps and triceps; to contract - the triceps relaxes while the biceps contracts to lift the arm.