Summary: Histology
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1 Hoorcollege 1
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Where is the Ectoderm present?
Nervous tissue, skin -
Where is Endoderm present?
Digestive tissue, lung -
Where is Mesoderm present?
Muscle, connective tissue (from mesenchyme) -
Dense connective tissue consists of:
-Fibroblasts
- Matrix (Ground substance(glycoproteins) & fibers) -
Where are reticular fibers present?
Basal membranes and around organs -
By what are elastic fibers synthesized
Fibroblasts, chondrocytes, smooth muscle cells -
Where are elastic fibers present?
Elastic dense conn. Tissue , elastic cartilage, blood vessel walls -
Is there blood circulation in cartilage and are there nerves present?
No blood circulation, only diffusion
No nerves -
Where is Elastic cartilage present?
Ear , larnyx
tolerates distortion without damage and returns to original shape -
What kind of bone cells are there?
Osteocyte: maintain bone matrixOsteoblast : Immature bone cell
Osteoprogenitor cell: Stem cells , produce osteoblasts
Osteoclast: dissolve bone matrix
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