Opposing muscles use connective tissues to cause movement in a joint.
muscles have attachments to the bones which form a particular joint and the contractions of those said muscles which straddle the joint causes the joint to move.
Yes! muscles are responsible for movements in the joint, while the bones act as lever..
soleus
By tensing.
Any nerve serving a muscle that produces a movement at a joint does innervate the joint and the skin over the joint.
This can be answered on several different levels, but let me take the simpliest.Major types of muscles:Skeletal - associated with bones - see more info below.Cardiac - muscle of the heart specializing in electrical communicationViseral or Smooth - lines all tubes and has the movement called peristalsisSkeletal Muscle movement associated with diarthritic joints: Hinge Joint - movement is extension or flexionCondyloid Joint - movement is pronation or supinationBall & Socket Joint - abduction & adduction are the first of many movements.Pivot Joint - movement is rotationAnd the list goes on. . . .
Extension
Joints don't have the ability to move. Joints are where two or more bones meet. One end of muscle attaches to the bone and the other end of the muscle stretches cross the joint and attaches to the bone on the other side of the joint. Muscles work in pairs, so that when one muscle contracts (the only movement that muscle can make), the other of the pair relaxes which causes movement at the joint when the bone is pulled by the muscle.
The movement permitted by a hinge joint is extension (opening) or flexion (closing). The elbow is a hinge joint. When you "flex your muscle", you preform a flexion movement (closing). The opposite is extension as in handing a cup to someone..
A synergist muscle is a muscle that aids another by promoting the same movement.
Muscle tone
The synergist muscle performs the same movement as the primary mover. This often depends of the position of the joint.
rotation
Muscle cells