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Most abundant tissue in the body
Muscle tissue
Muscle type responsible for voluntary movement
Skeletal muscle
Not a function of the muscular system
Production of blood cells
Muscle responsible for the heart beating
Cardiac muscle
Connective tissue sheath surrounding skeletal muscle
Epimysium
Basic functional unit of skeletal muscle
Sarcomere
Characteristic allowing skeletal muscle to return to resting length
Elasticity
Contraction causing heat production in the body
Skeletal muscle contraction
Muscle contraction involved in propelling food in the digestive tract
Smooth muscle
Location of intercalated disks
Cardiac muscle
Structure extending from one Z disk to another
Sarcomere
Molecule providing a calcium binding site on actin myofilaments
Troponin
Term for the most stationary end of a muscle
Origin
Muscle type under voluntary control
Skeletal muscle
Muscle type with gap junctions for action potential spread
Smooth muscle
Muscle type with striations less distinct than skeletal muscle
Cardiac muscle
Function of the retinaculum
Holding down tendons at the wrist and ankle
Muscle acting in opposition to an agonist
Antagonist
Muscle flexing the elbow
Biceps brachii
Condition characterized by painful, spastic muscle contractions
Cramps
Main symptom of fibromyalgia
Muscle pain
Result of an increase in myofibrils within muscle fibers
Muscle hypertrophy
Disorder with failure of muscles to relax after contraction
Myotonic muscular dystrophy
Muscle contraction not developing an oxygen debt
Smooth muscle contraction
Drugs used to treat myasthenia gravis
Anti-cholinesterase drugs
Inflammation of tendon attachment points
Tendinitis
Name for a broad, sheet-like tendon
Aponeurosis
"Striated" referring to muscle tissue
Muscle fibers have transverse bands
Muscle fibers organized into sarcomeres
Both cardiac and skeletal muscle
Muscle characteristic allowing response to a stimulus
Excitability
Ability of skeletal muscle to shorten with force
Contractility
Muscle responsible for peristalsis in the digestive tract
Smooth muscle
Muscle contraction leading to hypertrophy
Voluntary contraction
Connective tissue surrounding individual muscle fibers
Endomysium
Structure involved in muscle contraction composed of actin and myosin
Myofilament
Agonist in elbow extension
Triceps brachii
Decrease in muscle size due to decrease in myofilaments
Atrophy
Structure in cardiac muscle cells allowing action potential conduction
Intercalated disks
Characteristic not of smooth muscle cells
Striated
Muscle involved in communication like speaking and writing
Skeletal muscle
Connective tissue surrounding a muscle fascicle
Perimysium
Muscle type influenced by hormones like epinephrine
Both smooth and cardiac muscle
Condition involving chronic muscle pain syndrome
Fibromyalgia
Connective tissue holding down tendons at wrist and ankle
Retinaculum
Cytoplasm of a muscle fiber
Sarcoplasm
Muscle atrophy due to nerve damage or casting
Atrophy
Band of connective tissue holding down tendons at wrist and ankle
Retinaculum
Muscle fibers not organized into sarcomeres
Smooth muscle
Muscle with no tone due to severed nerve supply
Flaccid
Structure attached to the Z disk
Actin myofilaments
Muscle accomplishing a certain movement
Agonist
Muscle contraction under involuntary control
Both smooth and cardiac muscle
Main characteristic of myasthenia gravis
Muscle weakness
Muscle hypertrophy
The increase in muscle size due to an increase in the size of muscle cells.
Muscle atrophy
The decrease in muscle size due to a decrease in the size of muscle cells.
Destruction of acetylcholine receptors
A condition involving the chronic progressive autoimmune disease affecting acetylcholine receptors, known as myasthenia gravis.
Extensibility
The muscle characteristic that allows it to be stretched to its normal resting length and beyond.
Sarcomere
The smallest functional unit of skeletal muscle capable of contracting.
Skeletal muscle
The muscle type responsible for maintaining posture.
Myasthenia gravis
A condition involving chronic progressive autoimmune disease affecting acetylcholine receptors.
Cardiac muscle
The muscle type involved in heart contraction.
Z disk
The structure that forms an attachment site for actin myofilaments.
Insertion
The muscle attachment point that undergoes the greatest movement.
Intercalated disks
The characteristic of cardiac muscle that allows it to function as a unit.
Antagonist
Describes a muscle that acts in opposition to an agonist.
Perimysium
The connective tissue surrounding a muscle fascicle.
Cramps
Condition resulting from the buildup of lactic acid causing muscle pain.
Synergist
Describes a muscle that accomplishes the same movement as the agonist.
Smooth muscle
The muscle type with a single nucleus per cell and is under involuntary control.
Hypertrophy
The result of an increase in the number of myofibrils within muscle fibers.
Respiration
The primary role of the respiratory muscles.
Endomysium
The connective tissue that surrounds each skeletal muscle.
Excitability
Muscle characteristic that allows it to respond to a stimulus.