HLSC 2465U Lecture Notes - Lecture 3: Connective Tissue, Reticular Fiber, Perichondrium
Document Summary
Is underneath epithelial tissue, separates it from the basement membrane (which gives the epithelium it"s nutrients) Ex: when you cut yourself and sometimes it bleeds, you are getting the blood from the connective tissue below since epithelium is avascular. Made up of cells and extracellular matrix: extracellular matrix is made up of fibers and ground substance (jelly-like substance) Specialized: support (bone/cartilage = only ct that is not vascular, fluid (blood) Both reitculin and elastin fibres branch: reticulin is not visible under h&e, elastin gives flexibility and ability to bounce back to its original shape. Collagen does not branch: limited flexibility, strong, visible on an h&e slide. Produced by fibroblasts (which also produce collagen) Ex: gain weight and then you lose it, you lose elasticity, skin doesn"t. Cartilage more flexibility, made up of cells (chondrocytes) Hyaline cartilage is the most common type, contains collagen (ii) fibres makes it strong.
