NRTC Muscular System Word Scramble
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Question | Answer |
3 Types of muscle | smooth, cardiac, skeletal |
What is a Muscle Fiber | a single muscle cell |
What is Endomysium | it coats the muscle fiber, help give it support |
What are Fascicles | groups of muscle fibers |
What is the Perimysium | outer layer that wraps around Fascicles |
What is Epimysium | A tissue that wraps groups of Fascicles together |
Sacrolemma | like plasma membrane for muscle fibers |
Sarcoplasm | like the cytoplasm for muscle fibers |
Sarcoplasmic Reticulum | Where calcium is stored |
Consists of thick Filaments (myosin) and thin Filaments (actin) | Myofilaments |
What is required for muscles to move? | ATP (energy) |
The connection between a motor nueron and a muscle fiber is called | a nueromuscular junction |
When an impulse reaches the end of a motor neuron, it causes the release of | acetylcholine (ACh) |
ACh is known as a | neurotransmitter |
Continuous state of partial muscle contraction is called | Muscle tone |
What causes muscle tone? | posture, standing, holding your head up |
What is a motor unit? | A neuron and all the fibers it stimulates. |
What factors affect muscle Contraction? | Frequency of stimuli, strength of nerve signals, and type of contraction. |
Isometric contraction | muscle length does not change |
isotonic contraction | lifting and changing muscle length |
prime mover | The muscle that triggers a movement |
end of muscle that attaches to more stable bone | origin |
end of muscle that attaches to more freely moving bone | insertion |
muscle that assist the prime movers | synergists |
balances the use of a muscle | antagonists |
Created by:
anyconda
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