Skeletal Muscles: Muscles those attached to skeletal system and are voluntary in functions. These muscles are also called voluntary or somatic muscles.
Cardiac Muscle: is specialized muscle of heart which is involuntary in function. This is also known as myocardium.
Smooth Muscle: is involuntary muscle of internal organs. These are also known as internal or visceral muscles which are controlled by autonomic nervous system.
Sarcomere: is smallest microscopic structural and functional unit of muscle fibre.
Muscle Fibre: single muscle cell is also called muscle fibre.
Motor Unit: is group of muscle fibbers in a muscle supplied by single neuron.
Isotonic Contraction: contraction of sarcomeres with shortening of its length. This type of contraction helps in body movements.
Isometric contraction: contraction of sarcomeres without shortening of its length. This type of contraction helps in maintaining body posture.
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