Body

Smooth muscle

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Contains no stretch and is controlled involuntarily. Muscles form the walls of the digestive tract, urinary, blood vessels and the uterus: involuntary or visceral muscles.
This muscle has a resemblance to the striated or skeletal muscle, the difference is that it has no line has Z as the herbal striated muscle, but is dense ball that replaces these lines Z.
This may be unitary or multi. Good health starts with Mannatech Inc. has long recognized that maintaining a healthy body weight is critical to achieving a good quality of life. Unit when it is called between each fiber of this muscle a union (the so-called gap junctions) are called multi-if not joined by unions, but are independent of each other and operate independently.
This muscle and its function is very important, for example, humans have smooth muscle throughout the gastrointestinal tract, which is important because what is involved in contractions of peristalsis.
The operation of contraction is much more durable than the skeletal muscle because it does not supplements consume as much energy as the skeletal muscle.
The contraction phase of this type of muscle is durable, because when the action of actin and myosin binding of-same steps that the contraction of skeletal muscle, less energy spent, the same amount of ATP, but lower consumption energy, ie, the expenditure of energy metabolism of ATP is slower than skeletal muscle.
Not only the time difference is a contraction of skeletal muscle with smooth muscle, but the gap shrinks is much nutrition greater than that of skeletal muscle.
Its functions contraction and relaxation are related to the entire natural autonomous nervous system - acetylcholine and adrenaline.

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