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肌肉组织
The Muscle Tissue
1.Skeletal muscle (No.9)(Drawing)
2.Cardiac muscle (NO.10)
3.Smooth muscle (NO. 1)
20150402
Connective tissue coverings (responsible for force transduction):
Epimysium:surround the entire muscle
Perimysium: surround a muscle bundle
Endomysium: surround individual muscle cells
Skeletal muscle
Skeletal muscle: HE X100
Skeletal muscle: HE X100
Skeletal muscle:HEX400
Perimysium
Endomysium
Muscle fiber
Peripherally situated nuclei
myofibrils
Skeletal muscle: HEX400
Long cylindrical cell
Multinucleate
Dark bands-A
Light bands-I
Cardiac muscle
Endocardium
Myocardium
Epicardium
Purkinge fibersendocardium
myocardium
Cardiac muscle:HEX100
Intercalated discs
Cross striation
Elongated and centrally situated nuclei
Cardiac muscle:HEX400
Cardiac muscle:HEX400 (cross section)
Cap
Smooth muscle
Small intestine: HEX40
Adventitia
Muscular layer
Submucosa
Mucosa
Smooth muscle:HEX400
Elongated spindle-shaped cell
Centrally situated nucleus
No cross striation
Smooth muscle:HEX100
A few cells with nuclei
CT betw. fibers
Skeletal Muscle (Drawing)
1.Cross Section:
Epimysium
Perimysium
Endomysium
2. Longitudinal Section:
I,A band, sarcomere
The end
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