Muscular System, Muscular System

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skeletal muscle
Muscle tissue that is attached to the bones. This muscle is striated and under voluntary control.
cardiac muscle
Involuntary muscle tissue found only in the heart.
smooth muscle
Muscle tissue in the walls of body organs such as the stomach and intestines. It controls involuntary movement and makes the organs expand and contract.
sarcomere
Contractile unit of muscle
tendon
Connects muscle to bone
muscle tone
State of balanced muscle tension that makes normal posture, coordination, and movement possible
ATP
Adenosine Triphosphate/Chemical energy in cells
lactic acid
Is produced in the muscles when glucose is broken down during strenuous muscular activity. The soreness experience after prolonged heavy exercise is due to accumulated lactic acid in the muscles.
tetany
The smooth, sustained contraction of a skeletal muscle
Fascicle
A bundle of muscle fibers
Smooth Muscle
Muscular tissues that surround tubular organs such as the stomach, intestines and blood vessels
Skeletal Muscle
Composed of muscular tissue, nervous tissue, blood vessels and connective tissue
Cardiac Muscle
Muscular tissue that together forms the heart.
Myosin
A thick protein filament found in skeletal muscle
Actin
A thin protein filament found in skeletal muscle
Neurotransmitter
Message carrying vessels that travel from an axon to the action site of a muscle
Motor Neuron
The communication port of a skeletal muscle cell that dictates action
Motor Unit
A motor neuron and the muscle fibers that it control
Muscle Fiber
A single muscles cell that make up skeletal muscle
Myofibril
A fibril collectively arranged in longitudinal bundles in muscle cells (fibers); composed of thin filaments of actin and a regulatory protein and thick filaments of myosin.
Voluntary Muscle
A muscle that is under conscious control
Involuntary Muscle
A muscle that is not under conscious control
Biceps Brachii
A muscle that flexes the forearm
Triceps Brachii
A muscle that extends Forearm
Pectoralis Major
Adducts and flexes humerus
Gastrocnemius
Calf muscle
Deltoid
The shoulder muscle
Latissimus Dorsi
Muscle of the back that allows for the adduction of the arms
Rectus Abdominis
Abs
Trapezius
Elevates, depresses, retracts, and rotates the scapula; rotates the arm
Gluteus Maximus
Butt
Rectus Femoris
Extends the leg at the knee
Rectus Femoris, Vastus Lateralis, Medias and Intermedias
Quadriceps muscles
Tibialis Anterior
Allows for flexion of the foot
Peristalsis
Rhythmic wavelike contraction of smooth muscles
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