Cardiac, Smooth, Vascular Smooth Skip to main content
College of Life Sciences Cell Biology and Physiology
CELL 325: Tissue Biology
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Cardiac, Smooth, Vascular Smooth

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Cardiac muscle 4X.jpg
Cardiac muscle 4X
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Cardiac Muscle 20X.jpg
Cardiac Muscle 20X
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Cardiac muscle 20X longitudinal.jpg
Cardiac muscle 20X longitudinal
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Cardiac Muscle 40X.jpg
Cardiac Muscle 40X
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Cardiac muscle 40X longitudinal.jpg
Cardiac muscle 40X longitudinal
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Smooth Muscle 4X.jpg
Smooth Muscle 4X
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Smooth Muscle 20X.jpg
Smooth Muscle 20X
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Smooth Muscle 40X.jpg
Smooth Muscle 40X
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Smooth muscle transverse 40X.jpg
Smooth muscle transverse 40X
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Vascular SM 20X.jpg
Vascular SM 20X
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Vascular SM 40X.jpg
Vascular SM 40X
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Cardiac

  • A: Myocardium of the heart is comprised of cardiac muscle.

    B: Purkinje fibers are larger than normal cardiac muscle fibers with a pale staining central area. They function to conduct electrical impulses in the proper direction. Histologically they are modified cardiac myocytes.

    C: Endocardium has a surface layer of endothelium which is simple squamous.
  • A: Cardiac Myocytes with their centrally located nuclei

    B: Purkinje fibers adjacent to the endocardium

    C: Simple squamous endothelium
  • A: Bifucations are points where the cardiac muscle splits or branches into two separate portions.

    B: Simple squamous endothelial layer

    C: Nuclei are centrally located and there can me more than one nucleus per fiber
  • A: Cardiac myocytes

    B: Purkinje fiber
  • A: Bifurcation

    B: Intercalated discs are found between adjacent cardiac muscle cells and are specialised junctions that give mechanical support and provide a way for electrical stimulation to be passed cell to cell.

Smooth Muscle

  • A: Smooth muscle cells are fusiform in shape and have on nucleus which is found in the middle of the cell unlike skeletal muscle which has multiple peripherally located nuclei per cell.
  • A: Smooth muscle cells arranged regularly with centrally located nuclei
  • A: Smooth muscle fibers
  • A: Centrally located nuclei in a transverse cut of smooth muscle

Vascular Smooth Muscle

  • A: Simple squamous endothelium

    B: Internal elastic lamina. DECTIRA

    C: Smooth muscle fibers regularly arranged

    D: Tunica adventitia with adipose tissue
  • A: Internal elastic lamina

    B: Regularly arranged smooth muscle

    C: Tunica advetitia

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