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34 Cards in this Set
- Front
- Back
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What involuntary muscles are contracted by the autonomic nervous system? |
Smooth muscle and cardiac muscle |
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The Somatic nervous system influences what muscles? |
Skeletal muscles when influenced by CNS |
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What is found at the connection on two muscles (center of abs) |
Aponeuroses |
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Skeletal muscle has a line pattern labeling it as. |
Strained muscle |
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Skeletal muscle connects to bone by |
Tendons |
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Skeletal muscle has more than one? |
Nucleus |
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What are the connective tissue layers in skeletal muscle called? |
Epimysium Perimysium Endomysium |
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The fascia separates groups of muscles into individual muscle heads |
Epimysium - larges fascia |
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This fascia surrounds festivals within each muscle head |
Perimysium - group of muscle cells |
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This layer surrounds each muscle fiber |
Endomysium |
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The muscle cell membrane is called |
Sarcolemma |
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What is the basic functional unit of muscle fibers? |
Sarcomere |
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Myofibrils are made up of |
Actin and myosin |
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1 |
Sarcolemma |
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2 |
Mitochondria |
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3 |
Nucleus |
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4 |
Myofibrils |
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5 |
T tubules |
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6 |
Terminal cisterna |
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7 |
Triad |
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8 |
Sarcoplasmic reticulum |
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What makes up a triad |
T tubules located between two terminal cisternae |
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What Ion is held in the sarcoplasmic reticulum? |
Ca++ |
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A sarcomere contains what? |
I bands surround 2 zlines separated by an aband that contains a center Mline and middle Hzone |
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Actin filaments make up what 2 bands |
I band and A band |
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Myosin filaments a throughout what bands? |
A band and cross linked in the M band |
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What's the different in skeletal muscle action potential and receptor action potential? |
Threshold number of -95 and depolarization number of +30 |
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Where is the dihydropyridine receptor found |
Plasmalemma |
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Sarcoplasmic reticulum is where DHP attaches to? |
Ryanodine receptor |
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What is the difference in energy from the DHP to the RYR? |
DHP is electrical energy RYR is mechanical energy |
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Difference between actin and myosin in a muscle contraction? |
Actin is thin so it is free to move Myosin is thick so it stays in place |
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What does muscle contractions depend on? |
ATP & Ca! |
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What can glycogen do for muscle? |
Store energy |
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What form is energy stored in, in the skeletal muscle? |
Creatine phosphate |
