![]() ![]() Branched cells are connected via intercalated discs.Mitochondria occupies around 25% space in the cell and is richly supplied with blood vessels.Gap junctions are present in cardiac muscle cells.Contractions of muscle cells are interdependent.Muscle cells are connected side-by-side and are not tightly bound.It contains actin and myosin, and the muscle fibers are formed by the coalition of myoblasts present. Skeletal muscle is a striated muscle attached to a bone by collagen fibers known as tendons. The T-tubules form the triads, and the intercalated discs connect the cardiac myocyte to synctium. ![]() The thin striations are known as I-bands, while the thick ones are known as A-bands. Muscle fiber diameter is up to 100 micrometer and its length is up to 200 millimeterĬardiac muscle is a straited muscle with alternate thin and think striations along with intercalated discs and T-tubules.Speed of conduction of impulse is 3 – 5 m/s.Resting membrane potential of skeletal muscle is -80 mV.Requires nerve or hormonal stimulation to generate action potential which results in movement.Responsible for the movement of bones and cartilage.Voluntarily controlled by somatic nervous system.Found attached to bones all over the body.Muscle fiber diameter is around 10 micrometer and its length is around 50 micrometer.Speed of conduction of impulse is less than 1 m/s.Resting membrane potential of cardiac muscle is -90 mV.Requires stimulation by pacemaker cells for contraction.Involuntarily controlled by autonomic nervous system.So, what is the difference between skeletal muscle and cardiac muscle? Let’s see the various differential factors between the two. Every muscle is different from the other in various aspects. Skeletal muscles are attached to bones, cardiac muscles are found in the heart and smooth muscles are found in the stomach, gut walls, walls of the blood vessels, and various internal organs of the body. Depending on their specific characteristics, muscles are divided into three categories – Skeletal muscle, Cardiac muscle and Smooth muscle. There are more than 650 muscles attached to various bones in the body, and there is a specific type of muscle responsible for a particular type of movement. Muscles have a unique ability of converting chemical energy stored in the body in the form of ATP to mechanical energy, in the form of movement. The muscular system consists of numerous muscles that contribute in the movement of the body and certain movements occurring involuntarily within the body like the pumping of the heart etc. It contributes to almost half of an individual’s body weight. Movement of the human body is possible due to the presence of muscular system. ![]()
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