What is muscle? In simple terms, these are a bundle of fibrous tissue in our body which can contract and expand, capable of producing movement in various parts of the body. Muscle is a soft tissue that is found in most animals. Muscle cells contain proteins. They are of two types called actin and myosin. These proteins slide past each other which produces a contraction movement. This contraction changes both the length and the shape of the cell.
Predominantly there are three types of muscles called, skeletal muscles also called striated muscles, cardiac muscle, and smooth muscle. Another classification of muscles is Voluntary and Involuntary muscles. The muscles which move without our volition are called involuntary muscles. For example, the cardiac muscle in the heart and the smooth muscles are involuntary muscle. The skeletal muscles, on the other hand, are subject to our control, for example: bending of the hand.
|Shape||Striped, skeletal||Plain and unstriped|
|Type of cell||Multinucleated||Uninucleate|
|Nucleus||Peripherally located||Centrally located|
|Controlled by||Central Nervous system||Autonomic nervous system|
|Energy||Requires high energy||Requires low energy|
|fatigue||Gets fatigued easily||Slowly|
|function||Under our will||Not under our will|