Agonist(s) - Gluteus Maximus/Quadriceps Femoris
Synergist(s) - Biceps Femoris (Hamstrings)
Stabilizer(s) - Transversus Abdominis
Antagonist(s) - Hip Flexors (Mainly the Iliopsoas)
Movement(s) - Hip Extension/Knee Extension
Planes - Sagittal Plane
Your agonist(s) (when done properly i.e. sitting back/knees out) for a squat will be your glutes and quadriceps. Your synergist(s) will actually be your hamstrings as the biceps femorislong head assists greatly in hip extension. Your antagonist(opposing muscle) during a squat will be your Hip flexors i.e. Hip flexion.
The main muscles that are used in a lunge are the quadriceps and the hamstring muscles of the thigh. In the flexing portion, where the body is raised up out of the lunge, the quadricep flexes and the hamstrings relax.
The triceps lengthens when the biceps contracts, making the triceps the antagonist.
Deltoid
in the arm: bicep contracts (agonist) triceps relax (antagonist) in the leg: hamstrings contract (agonist) quadriceps relaxes (antagonist) remember the agonist is the muscle "agonising" to do the work - like pulling the joint.
Rectus abdominis is the prime agonist and the superior and inferior oblique muscles are synergists. Erector spinae is an antagonist including a number of other muscles of the back.
the agonist of the muscle is a motion that contracts the body to move in its opposition the antagonist is the muscle that causes movement of the posterior and anterior terms of the human body.
Agonist is muscarine and antagonist is atropine.
Agonist
Antagonist: lats Agonist: Abdominals
Antagonist
Agonist works with the muscles, and the antagonist is the muscle working against it in a contraction. i.e. Bicep curl, the agonist is the Biceps brachii and the antagonist muscle is the triceps brachii.The word agonist means "producing an action" - an antagonist opposes that action. In medicine, an agonist binds to a receptor site and causes a response, often imitating the natural body reaction. An antagonist acts against this drug and blocks the response. for examples ramiels small balls and pubic hair
The agonists are the muscles that help you to do this exercise. The antagonists are the muscles that bring you back to a regular position instead of being stuck.
agonist : trapizius antagonist: latissimus dorsi
You have gastrocnemius and soleus muscles on the back of the leg. They have common insertion in the form of tendocalcaneus. On the front side you have muscles of peroneal compartment to antagonize the calf muscles.