13.1 POJA-L4735C+4729B+4503+4537+4501+4502. Macroscopy, light microscopy and a scheme of the structure of the ventricle with cardiocytes and Purkinje fibers.
13.1 POJA-L4735C+4729B+4503+4537+4501+4502
Title: Macroscopy, microscopy and scheme of the heart
Description:
(A-B): Macroscopy of opened left ventricle of the heart. Left ventricle (1), papillary muscle (2), chordae tendinae (arrow 3), auricle (4), aorta (5).
(C1-3): Scheme cardiocytes, longitudinally (C1) and cross sectioned (C2). Modified cardiocytes of the conducting system (C3, Purkinje fibers). Perinuclear space (1). There are no fibrils in the perinuclear space. Branching of a cardiomyocyte (2). Intercalated disk (3). Venule or capillary with erythrocytes (4). Nucleus of fibroblast (5). In contrast to skeletal muscles, the cardiac muscle fibers are branched and anastomose with each other, thus creating a network. The Purkinje fibers (C3) are modified muscle fibers serving for excitation and conduction.
(D, E): Heart, ventricle, conducting system, PAS and HE, human. Specialized modified cardiomyocytes in branches of the conducting system also referred as Purkinje fibers (P). These cask-like cells are PAS positive (cross-sectioned) and are located below the subendocardial tissue
(S). (1) Normal cardiocytes. (2) Lumen ventricle.
(F): Cardiocytes of ventricle, HE, autopsy human. Compare to atrial cardiocytes in (G).
(G): Cardiac cells (cardiocytes) of atrium, HE, autopsy human. The atrial cells are smaller than the ventricular cells. There is distension between the cells due to fluid accumulation (autopsy preparation).
Keywords/Mesh: heart, atrium, ventricle, valve, papillary muscle, myocardiocyte, Purkinje fiber, conducting system, histology, POJA collection
Title: Macroscopy, microscopy and scheme of the heart
Description:
(A-B): Macroscopy of opened left ventricle of the heart. Left ventricle (1), papillary muscle (2), chordae tendinae (arrow 3), auricle (4), aorta (5).
(C1-3): Scheme cardiocytes, longitudinally (C1) and cross sectioned (C2). Modified cardiocytes of the conducting system (C3, Purkinje fibers). Perinuclear space (1). There are no fibrils in the perinuclear space. Branching of a cardiomyocyte (2). Intercalated disk (3). Venule or capillary with erythrocytes (4). Nucleus of fibroblast (5). In contrast to skeletal muscles, the cardiac muscle fibers are branched and anastomose with each other, thus creating a network. The Purkinje fibers (C3) are modified muscle fibers serving for excitation and conduction.
(D, E): Heart, ventricle, conducting system, PAS and HE, human. Specialized modified cardiomyocytes in branches of the conducting system also referred as Purkinje fibers (P). These cask-like cells are PAS positive (cross-sectioned) and are located below the subendocardial tissue
(S). (1) Normal cardiocytes. (2) Lumen ventricle.
(F): Cardiocytes of ventricle, HE, autopsy human. Compare to atrial cardiocytes in (G).
(G): Cardiac cells (cardiocytes) of atrium, HE, autopsy human. The atrial cells are smaller than the ventricular cells. There is distension between the cells due to fluid accumulation (autopsy preparation).
Keywords/Mesh: heart, atrium, ventricle, valve, papillary muscle, myocardiocyte, Purkinje fiber, conducting system, histology, POJA collection