Term
| State the function of Nerves |
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Definition
- carry impulses to + from brain to co-ordinate muscle activity
- motor neurons: stimulate muscle contraction
- nerve impulses: control timing + speed of muscle contraction |
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Term
| State the function of Muscles |
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Definition
- contain receptors: sned information via sensory neurons to brain
- contract: bring about movement at a joint
- work in antagonistic pairs |
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Term
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Definition
- meet at a joint: act as lever
- differet types of joints: different ranges of movement
- provide ridgid anchorage for muscle: tendons
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Term
| State function of Tendons |
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Definition
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Term
| State the function of Ligaments |
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Definition
- tough inelastic structures: bones of joint held together |
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Term
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Definition
- smooth strong cobering on surfaces of joint |
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Term
| Function of Synovial fluid |
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Definition
- reduces friction: lubricates on surface of cartilage
- acts as a shock absorber |
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Term
| Function of Joint capsule |
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Definition
| - encloses joint to protect it |
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Term
| State what a Hip joint is: |
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Definition
Ball and socket joint:
moves in three planes |
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Term
| State what structure Knee joint is: |
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Definition
Hinge joint:
moves in one plane only |
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Term
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Definition
| - protein fibres running through the cytoplasm |
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Term
| Name all key components in bundels of muscle fibres: |
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Definition
- actin filament
- myosin filament
- myosin head
- sacroplasmic reticulum
- calcium ions
- troponin
- tropomyosin |
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