Questions answered about Vitamin D

 Vitamin D, we've all heard of that. But is Vitamin D as good as one claims? Does not Vitamin D just sit in the sun? Can you just swallow extra Vitamin D and what are the differences in Vitamin D? The health coun…

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Joints / Muscles / Bones > Muscles

A muscle is a tissue structure of cells that have the ability to contract so that movement possible.

Muscle occurs in three forms: striated muscle, cardiac muscle and smooth muscle. Striated muscle tissue, muscle tissue is composed of long, multinucleated muscle fibers.
Striated muscle tissue is found mainly in skeletal muscle, mainly bones together.
Smooth muscle is not under voluntary control and is among others found in the gastrointestinal tract, blood vessels, respiratory, reproductive organs. Muscles are arranged in layers: shallow and deep muscles muscles.
The shallow muscles lie close to the skin surface. The deep muscles that connect the internal organs and body structure to protect, are below. If you are a muscular frame, it is shorter and thicker.
The contraction of the muscles caused by telescoping of thin and thick microfilaments in the myofibrils.
Myofibrils are thin wires inside the muscle that include an even thinner filaments: microfilaments. The myofibrils consist mainly of actin and myosin.
Actin and myosin form a "harmonica" structure, which ensures that the muscle can contract or relax.

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