Divided skeletal muscles

Divided skeletal muscles into several sub-types:

The first type, slow oxidative, slow twitch, or "red" muscle dense with capillaries and is rich in mitochondria and myoglobin, giving the muscle tissue its distinctive red color.

Can carry more oxygen and support aerobic activity Type II, fast twitch muscles are three main types that are, in order to increase the speed of contractile (Larson et al 1991).:

Internal type, which, like slow muscle, is aerobic, rich red mitochondria and capillaries and appears.

Organization Chat type (also known as Type IID), which is less dense in mitochondria and myoglobin. This is the fastest muscle type in humans. Could shrink more quickly and more with the amount of muscle strength of oxidation, but can be maintained only short bursts 

of anaerobic activity before muscle contraction becomes painful (often incorrectly attributed to the accumulation of lactic acid). In some books and articles in this muscle humans was, confusingly, called type IIB (Smerdu et al 1994).

Type IIB, which, anaerobic glycolytic, "white" muscles that are even less dense in mitochondria and myoglobin. In small animals such as rodents, and this is the kind of muscle very quickly, explaining the pale color of the meat. skeletal muscles is arranged separate muscles, example is the biceps brachii. Was connected by tendons to skeletal operations. In contrast, the smooth muscle occurs at different levels in the device almost from the skin (which control the erection of body hair) to the blood vessels and digestive system (which controls the caliber size (opening) of the cavity and peristalsis).

There are approximately 639 skeletal muscles in the human body.Conversely increased to popular belief, not the number of muscle fibers are not from muscle movement and instead will only increase. Muscle fibers have a limited capacity for growth through inflation (increasing the number of cells, while the number remains the same), and some believe that inflation (an increase in cell division and the number of cells, while is still the same size), where increased demand .