The abdominal wall muscles. You have internal oblique, external oblique, transverse abdominis and rectus abdominis muscles to form that wall.
Quadriceps, and Calves
hamis
Hamstrings muscles
We mostly talk about agonists and antagonists with regards to cellular receptors. An agonist binds to a receptor and activates it, an antagonist binds to the receptor, but DOES NOT activate it, and prevents it from being activated.
Extension of the forearm at the elbow joint is achieved almost entirely by the triceps brachii but extension of the arm, which actually takes place at the shoulder joint, is achieved by muscles on the back, such as the latissimus dorsi.
Moving the head back is called extension of the head
The scapula is a bone, and doesn't benefit directly from exercise. You can exercise the shoulder and back muscles by concentrating on exercises that benefit the pectoral, deltoid and latissimus dorsi muscle groups. One very simple one would be the common push-up; another would be the lat (or straight-arm) pull-down.
Trapezius Muscle!
Erector Spinae
I think its the Erector Spinae muscles that surround the spine. When these contract you get Bilateral extension of the spine, ie back bend. there fore the Rectus Abs need to softern and lengthen. Am I correct???
We mostly talk about agonists and antagonists with regards to cellular receptors. An agonist binds to a receptor and activates it, an antagonist binds to the receptor, but DOES NOT activate it, and prevents it from being activated.
extensorThe triceps brachii is an extensor. It is the large muscle on the back of the arm and is primarily the muscle used for extension of the elbow joint or straightening of the arm. The triceps is also an antagonist of the biceps and the brachialis muscles.ExtensorsTriceps is not a flexor. It is extensor of the elbow joint.
you can do lots of sit ups, it will strengthen your back and abdominal muscle!
Erector Spinae
When you exercise, you tear muscle fibers. Over time, these muscle fibers become thicker to prevent tearing. This is why your biceps bulge - it's actually just strands of muscle that have been torn through exercise and then grown back. Thicker muscles = more strength.
The hamstring (back / dorsal side of the thigh)
Extension of the forearm at the elbow joint is achieved almost entirely by the triceps brachii but extension of the arm, which actually takes place at the shoulder joint, is achieved by muscles on the back, such as the latissimus dorsi.
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.
Bench Press - Pectorals Leg Raises - Abdominals Pushdowns - Triceps Machine Back Press - Shoulders
Triceps Brachii Muscle is Latin for "three -headed arm muscle." It is the muscle in the back of the upper arm responsible for the extension of the elbow joint. It is composed of three main muscle bundles: the long head, the lateral head and the medial head.