Science, asked by aaron1030, 1 year ago

how to identity the three types of fibre muscle

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Answered by mritunjayy
1

Muscle tissue is a soft tissue, and is one of the four fundamental types of tissue present in animals. There are three types of muscle tissue recognized in vertebrates:

Skeletal muscle or "voluntary muscle" is anchored by tendons (or by aponeuroses at a few places) to bone and is used to effect skeletal movement such as locomotion and in maintaining posture. Though this postural control is generally maintained as an unconscious reflex, the muscles responsible react to conscious control like non-postural muscles. An average adult male is made up of 42% of skeletal muscle and an average adult female is made up of 36% (as a percentage of body mass).[5]

Smooth muscle or "involuntary muscle" is found within the walls of organs and structures such as the esophagus, stomach, intestines, bronchi, uterus, urethra, bladder, blood vessels, and the arrector pili in the skin (in which it controls erection of body hair). Unlike skeletal muscle, smooth muscle is not under conscious control.

Cardiac muscle (myocardium), is also an "involuntary muscle" but is more akin in structure to skeletal muscle, and is found only in the heart.

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Answered by rowdy18338
1
The 3 types of skeletal muscle fibres are:

Red / Slow (Type I fibres, 'slow twitch fibres')
Red / Fast (Type IIa fibres, 'fast oxidative fibres')
White / Fast (Type IIb fibres, 'fast glycolytic fibres')
Type I fibers are used for repeated contractions of low intensity like jogging, walking, bicycling.

Type IIa fibers are used in activity needing speed and strength like medium weight lifting and medium sprints.

Type IIb fibers are used in activity needing short bursts of speed and strength like heavy weight lifting and short sprints.
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