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A&P - Muscles

QuestionAnswer
What are the 4 properties of muscle tissue? Electrical excitability, contractility, extensibility, and elasticity
What percentage of your body mass is made up of muscle? 40
What are the functions of muscles? stabilize the body position, generate heat, regulate organ volume, and propel fluid and food matter through the body.
Each skeletal muscle is also a what? Organ
What are CT sheaths that surround groups of muscles? Fascia
What is the outermost layer of CT called? Epimysium
What is the CT that surrounds groups of muscle fibers? Perimysium
What is the CT that surrounds separate muscle fibers? Endomysium
What is the plasma membrane of the muscle fiber called? Sarcolemma
What is is the cytoplasm of the muscle fiber called? Sarcoplasm
What are are the contractile organelles of skeletal muscle called? Myofibrils
Which types of muscles are striated? Cardiac and skeletal
Which types of muscles are non-striated? Smooth
Which types of muscles are voluntary? Skeletal
Which types of muscles are involuntary? Smooth and cardiac
Which types of muscles are multi-nucleate? Skeletal
Which types of muscles are uni-nucleate? Smooth and cardiac
Which types of muscles are considered visceral? Smooth
What is formed when two bones articulate? Joint
What is the attachment of a muscle’s tendon to the stationary bone? Origin
What is the attachment of a muscle's tendon to the movable bone? Insertion
Muscles contract to what percentage of their length? 70
How many patterns of fascicles are there? 5
What are the different patterns of fascicles? Parallel, fusiform, circular, triangular, pennate
What does the prime mover, or agonist, do? Contracts
What does the antagonist do? Stretch
What stabilizes intermediate joints or otherwise assist the prime mover? Synergists
What are are muscles that keep the origin steady while an action is occurring? Fixators
What are the word roots for muscles? Pattern, size, shape, number, action, location, site
Created by: Sizzline
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