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25 Cards in this Set
- Front
- Back
The characteristic of muscle that allows it to be passively stretched |
Extensibility |
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What are the possible functions of the skeletal muscles |
-Posture -Temperature regulation -Regulation of movement -Support of organs -Both highly coordinated and localized simple movements |
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A skeletal muscle can be several inches long. The property of muscle tissue that allows an impulse to travel down the entire length of a cell membrane is? |
Conductivity |
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The spring like property that returns muscles to its original length after a contraction ends? |
Elasticity |
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Which is the correct listing of a hierarchy of a skeletal muscles component beginning with the smallest? |
-Mayofibrils -Muscle fibers -Fascile -Skeletal muscles |
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Which is the correct order of connective tissue layers of a skeletal muscle begging with the outermost layers? |
-Epimicism -Paremicism -Endomicisim |
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The structure responsible for attaching muscle to bone? |
Tendons
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The neurons that stimulate muscle contractions are called? |
Motor neurons
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The membranous network that wraps around the mayofibrilis and holds relatively high concentration of calcium? |
Sacropalasm reticulum |
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Which are the reservoirs that store the calcium require for muscle contraction? |
Terminal sesternay |
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Which protein makes up the thick filaments? |
Mayosin |
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What is the letter associated with the dark bands in a sarcomere |
A
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Which letter is associated with the line that is a thin protein structure that serves as an attachment site for the thin filament end? |
Z line |
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Which letter is associated with a zone that is a little more lightly shaded because only thick filaments are present? |
H |
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Which letter is associated with a light bands and it contains thin filaments only |
i band |
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A sarcomere is defined as a distance between one BLANK to the next BLANK disc |
Z, Z |
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Mayoglobin is molecule within muscle cells that can bind |
Oxygen |
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One feature that helps provide fast energy to a muscle cell is a presence of granules containing a complex carbohydrate? |
Glycogen |
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A motor unit consists of |
A single motor neuron and multiple muscle fibers it controls |
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The narrow space that separates the motor neuron and a skeletal muscle fiber in a neuron muscular junction? |
Synaptic Cleft |
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Acetylcholine exerts is effect by? |
Binding to receptors at the motor endplate |
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Which is the neurotransmitter that causes the release of calcium ions from reservoirs within the muscle cells and thereby initiates the steps of contractions? |
Acetylcholine |
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The calcium ions involved in skeletal muscle contractions bind to a BLANK subunit |
Troponin |
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In order for relaxation to occur what needs to happen? |
The sarcoplasm calcium levels fall, calcium is removed from troponin and tropmayosin blocks binding cites on actin |
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Glycolysis is what? |
Anaerobic process that occurs in cytosol |