Programme of next practicals. April 17th Revision practical + Microscopic structure of the heart and blood vessels . April 24th Blood cells: Cytology of formed elements of blood. Hematopoiesis – demonstration of developmental stages.
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Revision practical + Microscopic structure of the heart and blood vessels.
Blood cells: Cytology of formed elements of blood. Hematopoiesis– demonstration of developmental stages.
Repetition test II (Epithelial tissue, muscle tissue and nervous tissue.)
developed from mesenchyme
Mucous (jelly-like) connective tissue
composed of cells (chondrocytes) and intercellular matrix: fibers and amorphous substance (chondrocytes present in lacunae within the matrix)
cartilage is nonvascular, without nerves
perichondrium – dense irregular connective tissue on the surface: important for growth and nutrition of cartilage
Classification according to the kind and amount of fibers:
Classification on the structural basis (arrangement of cells):
Classification on the basis of function :
Goblet cells Paneth cells
Morphological unit of:
cell is called muscle fiber – rhabdomyocyte (multinucleated, nuclei at periphery)
myofibrils are structures inside the cell, consist of myofilaments (actin, myosin)
cell – cardiomyocyte (uninucleated, nucleus centrally)
myofibrils, intercallated discs
cell – leiomyocyte (uninucleated, nucleus centrally)
no myofibrils, only myofilaments
Histologically it consists of 2 principal cell types: