Yes, that's true.
The major flexors of the knee are the hamstrings, which include: biceps femoris, semitendinosus, and semimembranosus. The major extensors of the knee are the quadriceps, which include: rectus femoris, vastus medialis, and vastus lateralis.
trapezius, splenius muscles, and semispinalis muscles
When bones attached to a muscle are connected by a flexible joint, contraction of the muscle moves the skeleton. The muscle is called a flexor if the centers of the connected bones are brought closer together when the muscle contracts, and the movement is called flexion. (Biceps)The muscle is called an extensor if the bones move away from each other when the muscle contracts, and the movement is called extension. (Triceps)
Muscles that brings the two (or more) bones that form it closer are called flexors.
Ummm I think chicken legs :P
Muscles that bend a joint are flexors; musces that straighten a joint are extensors.
Skeletal muscles are found in pairs called flexors and extensors. The flexors bend a joint, and the extensors straighten the joint. Muscles cannot push; they only pull.
Skeletal muscles work in pairs: flexors and extensors
There are flexors and extensors in the forearm and they control the movements of the hand and wrist. If you hold your hand out (with the palm down), the flexors allow your hand to bend downward. The extensors allow your hand to bend upward.
Three - extensors, flexors, and adductors.
Wrist/finger flexors and extensors and the muscles in the thumb. Not allot.
shoulder depressors, extensors, adductors and abductors. elbow extensors, wrist extensors and finger flexors.
The two major groups are flexors and extensors.
3 Peronei, triceps surae, extensors and flexors of the toes and the 2 tibialis.
flexors and extensors
Yes, the abdominal muscles, for the most part are considered as flexors. They oppose the muscles in the back which are extensors. Working together the abs and back muscles keep the spine in proper alignment.
Triceps (the muscles behind/under your arm) are NOT flexors. They are extensors. http://en.wikipedia.org/wiki/Triceps_brachii_muscle You flex your biceps, not triceps.