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肌肉组织 The Muscle Tissue Skeletal muscle (No.9)(Drawing)

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Presentation on theme: "肌肉组织 The Muscle Tissue Skeletal muscle (No.9)(Drawing)"— Presentation transcript:

1 肌肉组织 The Muscle Tissue Skeletal muscle (No.9)(Drawing)
Cardiac muscle (NO.10) Smooth muscle (NO. 1)

2 肌肉组织: 概念:肌纤维、肌外膜、肌束膜、肌内膜 三种肌肉组织的分布 骨骼肌光镜结构,电镜结构 肌节组成 光镜下如何区别骨骼肌,心肌,平滑肌
闰盘的电镜结构

3 Skeletal muscle Connective tissue coverings
(responsible for force transduction): Epimysium: surround the entire muscle Perimysium: surround a muscle bundle Endomysium: surround individual muscle cells

4 Skeletal muscle: HE X100

5 Skeletal muscle: HE X100

6 Skeletal muscle:HEX400 Perimysium Endomysium Muscle fiber
Peripherally situated nuclei myofibrils Skeletal muscle:HEX400

7 Skeletal muscle: HEX400 Long cylindrical cell Multinucleate
Dark bands-A Light bands-I Skeletal muscle: HEX400

8 Cardiac muscle Endocardium Myocardium Epicardium

9 endocardium Purkinge fibers myocardium

10 Cardiac muscle:HEX100 Intercalated discs Cross striation
Elongated and centrally situated nuclei Cardiac muscle:HEX100

11 Cardiac muscle:HEX400

12 Cardiac muscle:HEX400 (cross section)
Cap Cardiac muscle:HEX400 (cross section)

13 Smooth muscle Adventitia Muscular layer Submucosa Mucosa
Small intestine: HEX40

14 Smooth muscle:HEX400 Elongated spindle-shaped cell
Centrally situated nucleus No cross striation Smooth muscle:HEX400

15 A few cells with nuclei CT betw. fibers Smooth muscle:HEX100

16 Skeletal Muscle (Drawing)
1.Cross Section: Epimysium Perimysium Endomysium 2. Longitudinal Section: I,A band, sarcomere

17 The end


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