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Aorta
- 1. Tunica Intima (innermost: endo and subendo CT)
- 2. Tunica Media (middle: SM and elastic tissue)
- 3. Tunica Adventitia (outermost: loose CT)
*big lumen, thick tunica media, lots of elastic fibers
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Muscular Artery
- 1. thin Tunica Intima (hardly visible)
- 2. Internal elastic lamina
- 3. Thick tunica media (lots of SM)
- 4. External Elastica Lamina
*thick wall relative to lumen, remain circular after fixation
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Vein
- -large lumen relative to the walls
- -valves
- -thin tunica media
- -thick tunica adventitia
- -distorted after fixation
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Lymphatic Vessel
- -VERY large lumen relative to wall
- -no RBCs in lumen
- -flattened after fixation
- -have tunica intima, media and adventitia
- -have valves
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Myocardium
- *Tunica Media
- -Purkinge fibers (binucleate, glycogen)
- -cardiac muscle cells (central nucleus, striations)
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Myocardium zoom
- -single central nucleus
- -striations
- -intercalated discs
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Skeletal Muscle
- -multinucleate
- -striations
- -no intercalated discs
-
Smooth Muscle
- Top: transverse
- Bottom: longitudinal
- -mononucleate
- -no striations
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