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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. Rigor mortis helps in estimating the time since death as well to ascertain if the body had been moved after death.

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Automaticity is  the ability to spontaneously depolarize and generate an action potential. It can also be defined as  ability to contract without direct stimulation by nervous system.

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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. Tissues often become restrictive and inelastic resulting in an increase in muscle tightness and pain.

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Extensibility is the ability of a muscle to be stretched. Lack of extensibility is known as spasticity.

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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. Inside the muscle, calcium facilitates the interaction between actin and myosin during contractions.

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Myosins 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. They are ATP-dependent and responsible for actin-based motility.

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A protein that forms (together with myosin) the contractile filaments of muscle cells. It 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.The sliding filament theory is a widely accepted explanation of the mechanism that underlies muscle contraction.

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Skeletal muscle attaches to the bones and makes body motions possible. This is a voluntary muscle.

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The myocardial muscles form the muscular walls of the heart. This is an involuntary muscle, if it wasn't we would die.

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Smooth muscle is located on the walls of the internal organs. This muscle is a voluntary muscle.

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

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Tetanus is an infection caused by bacteria called Clostridium tetani. When the bacteria invade the body, they produce a poison (toxin) that causes painful muscle contractions.

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Tonic seizures involve sudden stiffening and contraction of the muscles. Clonic seizures involve rhythmic twitching or jerking of one or several muscles. Tonic-clonic seizures are a combination of these two types in a specific pattern and are a type of generalized seizure.

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Involuntary contractions of a muscle, typically harmless and temporary, but can be painful. Muscle spasms can have causes that aren't due to underlying disease. Examples include extreme fatigue from overexertion, not using the muscle enough, low magnesium, or low potassium.

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Muscle fatigue 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. When you experience fatigue, the force behind your muscles' movements decrease, causing you to feel weaker.

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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. Muscles hold the body erect.
2. makes movement possible.
3. Move food through digestive system.
4. Muscle movements aids the flow of muscles through veins.
5. Muscle action moves fluid through the ducts and tubes associated with other body systems.
Bonus: The muscular system generates body heat.

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Fascia is a thin casing of connective tissue that surrounds and holds every organ, blood vessel, bone, nerve fiber and muscle in place. The tissue does more than provide internal structure; fascia has nerves that make it almost as sensitive as skin.

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A tendon is a cord of strong, flexible tissue, similar to a rope. Your tendons connect your muscles to your bones, letting us move our limbs.