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A&P Ch 8 -muscle

Muscular chapter

QuestionAnswer
Layers of connective tissue that separates individual. Uscles and hold it in position. Fascia
Broad connective sheets that attach muscle to bone Aponeuroses
Thick filaments Myosin
Thin filaments Actin
Repeating units within a muscle fiber Sarcomeres
Neurons that control skeletal muscles Motor neurons
Chemical released from neurons Neurotransmitter
Neurotransmitter released during a muscle contraction Acetylcholine
Muscle fiber that connects to the motor neuron Motor end plate
Motor neuron + muscle fiber Motor unit
Alternative source of ATP for a muscle cell Creatine phosphate
Molecule that carries oxygen in the blood Hemoglobin
Molecule that stores oxygen in the muscle cell Myoglobin
Amount of oxygen that is required to convert lactic acid into glucose + restore ATP and creative phosphate levels Oxygen debt
A muscles inability to contract Fatigue
Amount of Ach that is required In order to initiate a muscle contraction Threshhold stimulus
Combination of the forces do individual twitches Summation
Sustained contraction without relaxation Tetanic contraction
The stimulation of more motor neurons as the intensity increases Recruitment
Tupe of muscle that moves the skeletal system Skeletal muscle
Type of muscle that controls internal organs Smooth muscle
Type of muscle that makes up the heart Cardiac muscle
Wavelike motion found in smooth muscle Peristalsis
Immovable end of the muscle Origin
Movable end of the muscle Insertion
Prime mover Agonist
Muscles that assist the prime mover Synergists
Resist a prime mover Antagonists
Created by: mrseklund