Itec Muscles Of The Body

vigour-builder structure and Functions. Muscles are found throughout the physical structure. They support movement by contraction, stabilise joints. Also they assist in temperature control and give the body an overall tone. Some body builders work their muscle to give striking effects.
The muscles of the body blood line into three groups voluntary, involuntary and cardiac all of which have divergent structures.
Voluntary.
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Involuntary.
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Cardiac.
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Terms applied to Muscle
Abduction... is where a tree branch moves remote from the midline.
Circumduction... is the circular movement of a limb
Dorsiflexion... flexing or deflection the foot up, toe up heel down.
Eversion... go away(p) from the center. E.g. sole of foot
Extension...b rest or extend a limb outwards
Fatigue...lack of oxygen by overuse leaving a residue of lactic acid. Built up gives a tan sensation.
Flexion...bend or flex a limb inwards.
Insertion....is the moving end of the muscle. Muscle will always works from its insertion towards its origin.
Inversion... turning towards the center e.g. the sole of the foot
Origin... where the muscle joins the bone.
Pronation...



turning a limb to portray downwards.
Supination... turning a limb to face upwards
Tension... as the muscle contracts.
Tone... shaping posture of the body. muscular contraction of certain fibres as others are relaxing.
Lactic Acid Muscle contains fuel such as glycogen and fats which are reborn into energy by oxygen brought in by the blood. If the muscle is over worked without a break all the oxygen is apply up and the resulting by-product is lactic acid. This is felt as a burning sensation and quivering of the muscle and stops contracting.
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