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1. 2 types of muscles
2. Muscle Tissue
3. Shapes of Muscle
4. Skeletomuscular Relationship
5. Nerve innervation
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1. 2 types of muscles:
a) Striated muscles (eg: skeletal/ skeleton muscles, cardiac muscles)
b) Smooth muscles (eg: organ muscles)
Skeletal muscle tissue:
Has nucleus and striation (regular stripes).
intercalated disc is a double membrane separating adjacent cells in cardiac muscle fibers.
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2. Muscle Tissue: Epimysium 肌外膜- structure which wraps up entire muscle--NOT to be confused with "superficial fascia", which is some fatty deposit which wraps round the Epimysium. (The superficial fascia is continuous throughout the body, so when infected, it spreads out very quickly!) Perimysium肌束膜 - groups individual muscle fibers into a bundle, and wraps the bundle up Endomysium肌內膜 - wraps up individual muscle fibers. ~~~~~~~~~~~~~~~~~~~~~ 3. Shapes of Muscle -Spindle -Cord -Sheet -Massive Pennate:羽狀肌纖維 (feather like muscle fibers) -Unipennate單羽 -Bipennate雙羽 -Multipennate多羽 ~~~~~~~~~~~~~~~~~~~~~~ 4. Skeletomuscular Relationship (origin & insertion) Origin--"starting point" of muscle Insertion--"finishing point" of muscle. When moving, insertion always move towards origin. Origin normally don't move ~~~~~~~~~~~~~~~~~~~~~~ 5. Nerve innervation -Sensory fiber - detects feelings--contains muscle spindle - -Motor fiber - moves to reply the feelings.-- contains 1. motor end plate, 2. neuromuscular junction - http://vet-net.net.ms
2. Muscle Tissue:
(The superficial fascia is continuous throughout the body, so when infected, it spreads out very quickly!)
Perimysium肌束膜 - groups individual muscle fibers into a bundle, and wraps the bundle up
Endomysium肌內膜 - wraps up individual muscle fibers.
~~~~~~~~~~~~~~~~~~~~~ 3. Shapes of Muscle
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4. Skeletomuscular Relationship (origin & insertion)
Origin--"starting point" of muscle
Insertion--"finishing point" of muscle.
When moving, insertion always move towards origin.
Origin normally don't move
5. Nerve innervation -Sensory fiber - detects feelings--contains muscle spindle - -Motor fiber - moves to reply the feelings.-- contains 1. motor end plate, 2. neuromuscular junction -
(c) copyright Susanna Shiu & Queenie Liew, since September 2007