Most diagrams of the human body are shown in the correct “anatomical position”. This position is when the body is in an erect posture, facing forward, arms at side, palms of hand forward, with fingers and thumbs in extension. It is designated as the zero position for defining and measuring joint motions for most of…

The anatomy and physiology of human muscle is fascinating.  It is very complex, yet simple.  An example of this is Sherrington’s law of reciprocal inhibition.  This law states that when a muscle is activated, or contracting, it opposing muscle will relax. Imagine you are doing a bicep curl, or simple lifting a water glass to…

Here is a freebie from our Muscle Anatomy DVD’s, and also from our award winning TV program.  Time for a human muscle anatomy lesson with the pectoralis major…your chest.  You must, you must, you must improve your bust!

A double jointed muscle (one that crosses two joints) can reach a length at which it cannot produce a significant amount of force.  This condition is called “actively insufficient”.  For example, when on tries to achieve full hip extension, while maintaining full knee flexion…the hamstrings (double jointed muscle) are unable to shorten enough to produce…

Many factors come into play with the return of muscular strength.  Weakness could have originally be caused by nerve involvement, atrophy from lack of use, stretch weakness, pain, or even fatigue.  Likewise the return of muscular strength can happen because of recovery from a disease process, healing of nerves after injury or trauma, hypertrophy of…

Musculoskeletal conditions often show patterns of muscle imbalances. This could be imbalance in strength, flexibility or both. Imbalance that affects body alignment is an important factor in many painful postural conditions. In the human muscle anatomy, imbalance may result from occupational or recreational activities in which there is persistent use of muscle, often without adequate…

With movement of the human body, the origin of the muscle is generally fixed.  When the origin is fixed and a muscle contracts, it will pull the insertion toward the origin.  This is always not the case however, as there are some instances when the insertion can be fixed, which will cause  the origin to…

Your patella is more that just a kneecap.  Take a minute to watch this quick lesson….

Sprain, strain, tendons, and ligaments.  More often than not, lay people use the wrong terminology when describing injuries and probably one of the most common is when describing a “strain” or a “sprain”.  The terms are used to not only describe the type of soft-tissue injury but also is referencing the type of tissue in…

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