| Muscles | Muscles pt. 2 | Muscles pt. 3 | Muscles pt.4 |
|---|---|---|---|
|
What is the neuromuscular junction (NMJ)
The site where the motor neurons axon terminal meets with muscle fibers
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What are the three types of muscle tissue?
Cardiac, Smooth, Skeletal
|
What is hypotonia
Low level contractions associated with muscle tone
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What are Slow Oxidative (SO) characteristics?
Used for long term (e.g. running)
Red in color Has the most mitochondria Slow fatigue -- slow contraction Aerobic respiration |
|
What makes up thick filament?
Myosin
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What is skeletal muscle (Location and function)?
Location: Attached to bones
F(x): Skeletal Movement |
What is hypertonia
Excessive muscle tone
|
What are Fast Oxidative (FO) characteristics?
Used for slow movements (e.g. walking)
Pink in color -- less myoglobin Aerobic respiration and aerobic glycolysis Fast contraction |
|
What makes up thin filament?
actin, troponin, tropomyosin
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What is Smooth muscle (location and function)?
Location: hollow organs and blood vessels
F(x): various functions like peristalsis |
What happens during isotonic contractions?
The muscle length changes to move a load.
|
What are Fast Glycolytic (FG) characteristics?
Used for fast movements (e.g. sprinting)
White In color -- little myoglobin Anaerobic glycolysis high tension, high fatigue |
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What are the regulatory proteins?
troponin and tropomyosin
|
What is cardiac muscle (Location and function)?
location: Heart
F(x): Generate pressure to pump blood |
What happens during isometric contractions?
The muscle length does NOT change because the load exceeds the tension the muscle can generate.
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Long distance runners have a large number of ____ fibers and relatively few ___ and ___ fibers?
Slow Oxidative (SO)
Fast Oxidative (FO) & Fast Glycolytic (FG) |
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what happens when a muscle contracts and what is another term for contracting?
troponin and tropomyosin Contraction (shortening) of a muscle begins when actin is pulled by myosin
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What are the 3 proteins of skeletal muscle?
contractile, regulatory and structural
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During an isotonic eccentric muscle contraction, tension is generated and maintained as muscle length ____?
increases
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The number of mitochondria in slow oxidative muscle fibers is _______ the number of mitochondria in fast glycolytic fibers?
Greater than
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