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There are three types of muscle tissues in the body: smooth, cardiac and skeletal. There are more than 600 muscles in the human body.
Myofibril
Myofibrils make up the contractile components in muscles. They are the smallest complete contractile system. The cells are densely packed with contractile proteins, energy stores and signaling mechanisms.
Muscle fiber
Each fiber contains hundreds or even thousands of myofibrils. Each individual fiber consists of a membrane (sarcolemma) and can be further broken down into myofibrils.
Fasciculus
Muscle fibers are grouped into bundles ( of up to 150 fibers) called fasciculus.
Muscle
Contains smaller wrapped packages known as fasciculus. Each muscle cells or fibers. The belly of the muscle, or muscle belly, is a term used to describe the large mass of muscle that powers movement.
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