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Rigor mortis (Latin: rigor "stiffness", mortis "of death"), the third stage of death, is one of the recognizable signs of death, caused by chemical changes in the muscles post mortem, which cause the limbs of the corpse to stiffen. In humans, rigor mortis can occur as soon as 4 hours post mortem.

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is the cardiac cell's ability to spontaneously generate an electrical impulse (depolarize). Cells that are dedicated to the purpose of generating an impulse to maintain a heart rate commensurate with the body's need are called pacemaker cells.

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Contractility refers to the capacity of muscle to contract or shorten forcefully.Excitability means that muscle responds to stimulation by nerves and hormones, making it possible for the nervous system and, in some muscle types, the endocrine system, to regulate muscle activity.

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Muscle-tendon elasticity complex is the natural ability of your musculoskeletal system to 'return to its original state'. When the limb of your body is moved in any way in any direction for any purpose, muscles and tendons accommodate by elongating or shortening at various key spots.

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Muscle has four major functional characteristics: contractility, excitability,extensibility, and elasticity. ... Extensibility means that muscles can be stretched to their normal resting length and beyond to a limited degree. Elasticity means that ifmuscles are stretched, they recoil to their original resting length.

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Contractility refers to the capacity of muscle to contract or shorten forcefully. Excitability means that muscle responds to stimulation by nerves and hormones, making it possible for the nervous system and, in some muscle types, the endocrine system, to regulate muscle activity.

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In turn this triggers the sarcoplasmic reticulum to release calcium ions into the muscle interior where they bind to troponin, thus causing tropomyosin to shift from the face of the actin filament to which myosin heads need to bind to produce contraction

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A protein found in muscle tissue as a thick filament made up of an aggregate of similar proteins. Myosin and the protein actin form the contractile units (sarcomeres) of skeletal muscle. In the sarcomere, actin and myosin filaments slide past each other to cause the shortening of a muscle fiber.

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A protein found in all eukaryotic cells, forming filaments that make up a main component of the cell's supporting matrix or cytoskeleton. Actin and the protein myosin together make up the contractile units (called sarcomeres) of skeletal muscle fibers.

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According to the sliding filament theory, the myosin (thick) filaments of muscle fibers slide past the actin (thin)filaments during muscle contraction, while the two groups of filaments remain at relatively constant length.

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Skeletal muscle is one of three major muscle types, the others being cardiac muscle and smooth muscle. It is a form of striated muscle tissue which is under the 'voluntary' control of the somatic nervous system. Most skeletal muscles are attached to bones by bundles of collagen fibers known as tendons.

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is an involuntary, striated muscle that is found in the walls and histological foundation of the heart, specifically the myocardium. Cardiac muscle is one of three major types of muscle, the others being skeletal and smooth muscle.

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Smooth muscle is an involuntary non-striated muscle. It is divided into two subgroups; the single-unit (unitary) and multiunit smooth muscle. Within single-unit cells, the whole bundle or sheet contracts as a syncytium.

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Tetany or tetany seizure is a medical sign consisting of the involuntary contraction of muscles, which may be caused by disease or other conditions that increase the action potential frequency of muscle cells or the nerves that innervate them.

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Tetanus is caused by an infection with the bacterium Clostridium tetani, which is commonly found in soil, saliva, dust, and manure. The bacteria generally enter through a break in the skin such as a cut or puncture wound by a contaminated object.

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producing tone or tonicity in muscles or tissue. Characterized by continuous tension or contraction of muscles, as a convulsion or spasm. Producing or stimulating physical, mental, or emotional vigor.

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Clonic means sustained rhythmical jerking. During a clonic seizure, jerking of the body or parts of the body are the main symptom. They can begin in one area (called focal motor) or affect both sides of the brain (called generalized clonic). Clonic seizure movements cannot be stopped by restraining the person.

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A spasm is a sudden involuntary contraction of a muscle, a group of muscles, or a hollow organ such as the heart. A spasmodic muscle contraction may be caused by many medical conditions, including dystonia. Most commonly, it is a muscle cramp which is accompanied by a sudden burst of pain.

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Muscle fatigue is the decline in ability of a muscle to generate force. It can be a result of vigorous exercise but abnormal fatigue may be caused by barriers to or interference with the different stages of musclecontraction.

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5 basic funtions of the muscular system 

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5 basic funtions of the muscular system 

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Skeletal muscles attach to your bones, stabilizing the skeleton and enabling voluntary and reflexive movement. Smoothmuscle tissue found in blood vessels and various body organs produces involuntary movement essential for normal function.

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Is a flat usually horizontal member of a building having the form of a flat band or broad fillet: such as; a flat piece used as a molding.Fascia is a specialized system of the body that has an appearance similar to a spider's web or a sweater.Fascia has gone from being a nobody to being the body's superhero.

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A tendon or sinew is a tough band of fibrous connective tissue that usually connects muscle to bone and is capable of withstanding tension. Tendons are similar to ligaments; both are made of collagen. Ligaments join one bone to another bone, while tendons connect muscle to bone.