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28 Cards in this Set
- Front
- Back
- 3rd side (hint)
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Cardiac Muscle |
Involuntary striated muscle Mono-nucleated Involving the heart |
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Smooth Muscle |
Involuntary non-striated muscle Lines blood vessels, digestive organs, urinary system, and parts of the respiratory system. |
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Skeletal Muscle |
Voluntary striated muscle Controlled by motor nerve cells |
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Sarcolema |
Cell membrane |
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Front (Term) Myofibrils |
Back (Definition) Bundles of myofilaments |
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Sarcoplasm |
Equivalent to the cytoplasm |
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Thin filaments |
Actin |
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Thick filaments |
Myosin proteins |
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Sacrcoplasmic reticulum |
Equivalent to the small ER (stores Ca+) |
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Sarcomeres |
Repeating units of myofilaments |
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Latent period |
2 milliseconds action potential and the release of Ca+ |
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Contraction phase |
15 milliseconds Cross bridges form |
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Relaxation phase |
25 milliseconds Tension, cross bridges and Ca+ decreases |
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Tone |
Resting tension |
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Atrophy |
Fibers and become smaller and weaker |
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Muscle fatigue |
No contraction despite stimulation Lack of ATP or lactic acid build up |
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Recovery period |
Returns to pre-exertion levels |
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Fast twitch (white) |
Powerful contractions Fatigue rapidly |
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Slow twitch (red) |
Extended contraction Extensive capillary network Myoglobin binds oxygen |
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Anaerobic |
Frequent, brief intense workouts |
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Aerobic |
Sustained low levels of activity Carb-loaded the day before; drink glucose rich sports drinks |
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How many muscles are in the body |
600 |
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What are the functions of the skeletal muscles |
Producing movement Maintain posture Stabilizing joints Generate heat Multi-uncleated |
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What are the functions of the skeletal muscles |
Producing movement Maintain posture Stabilizing joints Generate heat Multi-uncleated |
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Acetylcholine |
The Neurotransmitter that reports on the sarcolema |
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Relaxed or straight |
Relaxed |
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Relaxed or contracted |
Relaxed |
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Relaxed or contracted |
Contracted |
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