Endothelial cells

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Endothelial cells
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Dense C.T. of Cardiac Skeleton
Cardiac Muscle
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Mesothelium
Coronary sinus thick T. interna distinct T.
externa no obvious T. media
Collagenous C.T. (blue band)
Subepicardial layer largely Adipose tissue
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Collagenous fibers (red)
Purkinje fibers (purple)
Branch of Coronary artery
Located in subepicardial layer
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Myocardium of left ventricle
AV Bundle (intersecting lines) Purple elements
are Purkinje fibers
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Small bundle of Purkinje fibers (longitudinal
section) fibers large, pale nuclei located in a
clear central mass
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Cardiac Muscle
Large bundle of Purkinje fibers in endocardium of
ventricle. Clear sarcoplasm, occassional nuclei
are seen in cross sections
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Small lymph capillary in dense C.T. capsule of
testis
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Lymph vessel in C.T. at hilum of lymph node.
Section through root of two valve leaflets (red
arrows). Wall of vessel consists of endothelium
(arrows show nuclei) and thin outer sheath (T.
externa) of collagenous fibers.
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Valve leaflets
Note expansion of vessel in diameter beyond
attachment of valves