What Is Fixator Muscles?

This joint is stabilized by dynamic and passive stabilizers. Dynamic stability is provided by muscle who cross the joint, quadriceps, triceps surae and hamstring. Passive stability is supported by non-contractile structures such as

to contract, which then allows body movements and functions? There are two types of muscles in

It's function is to hold the tendons in position. It's dysfunction can cause is tenosynovitis and carpal tunnel syndrome.

Muscles in human body is like the motor which supports or assist the bones at the joints to move and work. When the muscle pulls it moves the bones at particular joints, which establish the joints to move about.

The muscles play major role in the body. Produce movement, maintain posture, stabilize joints, and help generate heat, assist in blood circulation. There are three types of muscles. Skeletal muscle, smooth muscle, and cardiac muscle. Skeletal muscles are most abundant and found attached to skeleton. They respond quickly to stimuli, help in adjusting individual to external environment and being capable of rapid contractions. Skeletal muscle act by contraction that results in shortening and pull on the tendons. Than this transfers the force to bone attached and makes desired movements. Skeletal muscles rarely work by themselves to make movements in the body. The biceps brachii muscle extends the arm at the elbow. When triceps is extending the

This activity is the critical driving force of muscle contraction. The stream of action potentials along the muscle fiber surface is terminated as Acetylcholine at the neuromuscular junction is broken down by acetyl cholinesterase. The release of Calcium ions is ceased. The action of the myosin molecule heads is obstructed because of the change in the configuration of troponin and tropomyosin due to the absence of calcium ions. This will eventually cause the contraction to be ceased. Together with these physical processes, an external stretching force such as gravity pulls the muscle back to its normal length.

These muscles are under control of will. These muscles are controlled by the central nervous system. i.e. Coraco brachialis muscle. This is found in the upper part of the arm and flexes the shoulder joint.

MS are important to coordinate and control muscle contractions, and its purpose is to send a signal to the muscle to contract.

Secondly it allows movement as muscles cross joints and attach bone to bone. Muscles work in pairs and skeletal muscles can pull in one direction and for this reason they always come in pairs. Due to the fact that two muscles work together, as one muscle in the pair contracts the other muscle relaxes for example as the bicep contracts the triceps relaxes to once again straighten the joint out.

The major muscle groups consist of the upper body, Rotator cuff muscle, Upper arm, Quadriceps, Hamstring group, Lower leg and Midsection. The Upper Body consists of the Trapezious muscle which Orgin is located near the base of skull, occipital protuberance and posterior ligaments of neck. The middle spinous process of 7c and T1 - T3. The lower spinous process of T4-T12. The insertion of the upper Trapezius is located in the posterial aspect of the lateral clavicle. The middle Trapezius is located in the medial border

As a result of the contractions in the Muscle- Skeletal Longitudinal Section cells and the Muscle- Skeletal Cross Section cells, it allows your muscle to be able to contract in response to nerve stimuli. This means that the movements of most of these muscles are not involuntary, you can control them. Therefore, once the stimulation stops, the muscles relax.

Descriptive terms are used to name skeletal muscles. Some names give the location in the body. The temporalis muscle is attached to the temporal bone in the skull. The brachialis muscle is attached to the humerus bone, but brachial refers to the main artery in the arm. Some muscles are named for their origins and insertions, like the genioglossus muscle, for example, originates at the chin (geneion) and inserts in the tongue (glossus). Some muscles are named for the arrangement of the fascicle groups. For example the rectus abdominus is the straight muscle that is in the adbominus.

The shoulder is a ball and socket joint which allows it a flexion and extension motion.

Muscles are specialised tissues which respond to nervous stimulation by contracting, which means that the muscle shortens and thickens. Muscle tissue is also elastic, which means that it can be stretched by weight, and when the weight is removed the muscle will return to its normal length.