BIOL302 Lecture Notes - Lecture 4: Loose Connective Tissue, Ground Substance, Ultimate Tensile Strength
18 Jan 2017
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Document Summary
Connective tissue: found underneath and between cells, passage way for blood vessels and nerves, location of cell migration, active white blood cells are found in looser connective tissues. Functions: maintain boundaries, structural support, cell adhesion and movement, protection, molecular exchange. Fibres: multiple different bres can be present in connective tissue, distinctive of connective tissue type/function. Collagen: thick, long and wavy, non branching, usually pink. Inelastic and has tensile strength), self assembling coil. Elastic: thin, branching, angular or uncoiled, stain black. Reticular: thin, branching, stains dark with pink background, surrounds cells (collagen type 3) Ground substance: liquid found in the space of connective tissue, contains glycosaminoglycans and proteoglycans, hydrate the environment and hold water, makes connective tissue looser, location of molecular exchange. Matrix: bres and ground substance are referred to collectively as the matrix. Cells: can be found in connective tissues, looser tissues have ore cells.
