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Rigor mortis is a postmortem change resulting in the stiffening of the body muscles due to chemical changes in their myofibrils.

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Automaticity: the ability to spontaneously depolarize and generate an action potential.

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Excitability is the ability to respond to a stimulus, which may be delivered from a motor neuron or a hormone.

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Tissue elasticity is the ability to stretch a muscle to reach its full range of movement without restriction. Different types of tissues can be found within the body including soft tissues and connective tissues.

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Extensibility is the ability of a muscle to be stretched. For instance, let's reconsider our elbow flexing motion we discussed earlier. In order to be able to flex the elbow, the elbow extensor muscles must extend in order to allow flexion to occur.

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Contractility is the ability of muscle cells to forcefully shorten. Contractility allows muscle tissue to pull on its attachment points and shorten with force.

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Calcium's positive molecule is important to the transmission of nerve impulses to the muscle fiber via its neurotransmitter triggering release at the junction between the nerves (2,6).

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Myosins (/ˈmaɪəsɪn, -oʊ-/) are a superfamily of motor proteins best known for their roles in muscle contraction and in a wide range of other motility processes in eukaryotes.

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protein that forms (together with myosin) the contractile filaments of muscle cells, and is also involved in motion in other types of cell.

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The sliding filament theory explains the mechanism of muscle contraction based on muscle proteins that slide past each other to generate movement.

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Skeletal muscles (commonly called Muscles) are organs of the vertebrate muscular system that are mostly attached by tendons to bones of the skeleton(Voluntary)

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Cardiac muscle is an involuntary striated muscle tissue found only in the heart and is responsible for the ability of the heart to pump blood.

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Smooth muscle, also called involuntary muscle, muscle that shows no cross stripes under microscopic magnification.

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condition marked by intermittent muscular spasms, caused by malfunction of the parathyroid glands and a consequent deficiency of calcium.

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serious bacterial infection that causes painful muscle spasms and can lead to death.

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Clonic spasms refer to alternating involuntary muscular contraction and relaxation in quick succession. Tonic spasms are rigid muscle contractions that last a period of time.

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sudden involuntary muscular contraction or convulsive movement.

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is a symptom that decreases your muscles' ability to perform over time. It can be associated with a state of exhaustion, often following strenuous activity or exercise.

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5 basic functions of the muscular system

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5 basic functions of the muscular system

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1. Mobility

The muscular system’s main function is to allow movement. When muscles contract, they contribute to gross and fine movement.

2. Stability

Muscle tendons stretch over joints and contribute to joint stability. Muscle tendons in the knee joint and the shoulder joint are crucial in stabilization.

3. Posture

Skeletal muscles help keep the body in the correct position when someone is sitting or standing. This is known as posture.

4. Circulation

The heart is a muscle that pumps blood throughout the body. The movement of the heart is outside of conscious control, and it contracts automatically when stimulated by electrical signals.

5. Respiration

Breathing involves the use of the diaphragm muscle.

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Fascia is a thin casing of connective tissuethat surrounds and holds every organ, blood vessel, bone, nerve fiber and muscle in place.

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Tendons are the connective tissues that transmit the mechanical force of muscle contraction to the bones