When sarcomeres shorten, the muscle fiber SHORTENS.
Mechanism :
Sacromeres are used to construct the myofibrils, which are a part of the skeletal muscles of animals. They use the sliding filament model to carry out the muscle contraction and relaxation.
To create movement, The cross-bridge between actin and the myosin heads causes the sacromere to shorten. Muscle fibers contract as a result of this shortening of the sacromere, which has the overall effect of shortening the fibers.
To learn more about myofibril refer : brainly.com/question/15461128
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1.) atom ; tissue
2.) cell
3.) organ system
4.) true
5.) atom
6.) Particle
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Cholesterol refers to a fat-like waxy substance, which is found in all the cells of the body. The body needs some cholesterol to produce hormones, substances that assist in digesting foods, and vitamin D. The body produces all the cholesterol it requires.
Cholesterol enhances the fluidity of the membrane, which otherwise comprises majorly the long-chain saturated fatty acids.
Cholesterol minimizes the fluidity of the membrane in the regions known as rafts that comprise huge concentrations of cholesterol and sphingolipids.
