Connective Tissue
description
Transcript of Connective Tissue
Connective Tissue• Features
– Cells far apart with matrix between• Matrix
– Protein fibers – Ground substance
• Not usually on body surface• Can be hard to liquid
– Bone and blood are connective
• Vascular – except cartilage and tendons
• High nerve supply- except cartilage
Connective Tissue Cells• Fibroblasts
– Secrete the fibers and matrix of tissue• Mast Cells
– Along blood vessels– Secrete histamine
• Macrophages– Do phagocytosis, are white blood cells
• Plasma cells – another white blood cell
• Adipocytes– Fat storage cells
Extra cellular Matrix• Ground Substance
– Contains different substances depending on tissue type
– Can be watery or cement like– Hyaluronic acid is viscous and slippery
for joints
Fibers• Collagen Fibers
– Largest– Strong– Flexible– Collagen protein– Bone, cartilage, tendons, ligaments
• Elastic fibers – Smaller than collagen– Promotes ability to stretch– Marfan’s
• Reticular fibers– Smallest– Give support and strength– Stroma (framework) of some organs
Connective tissue types• Major types• Embryonic
– mesenchyme• Loose connective
– Areolar– Adipose– Reticular
• Dense Connective– Dense regular– Dense irregular– Elastic connective
• Cartilage– Hyaline– Fibrocartilage– Elastic cartilage
Mesenchyme
Areolar
Adipose
Reticular
Elastic connective
Dense irregular
Dense regular
Fibrocartilage
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Hyaline cartilage
Elastic cartilage
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Mesenchyme