Epithelial Tissue Chart for Histology

Cell Arrangement Shape Description Simple Squamous Flat Irregular shape Oval Nuclei Function absorption diffusion reduction of friction location Lining of blood vessels, heart, and air sacs of lungs Mesothelium Endothelium Single layer Simple Simple Cuboidal Cube-shaped cell Round nuclei Secretion Absorption Single Layer Columnar Tall & thin cells Oval nuclei Single layer Absorption Secretion of mucus and enzymes Kidney tubules, ducts, and secretory portions of small glands ovary surface Lines stomach, intestine, gallbladder Image Cell Arrangement Shape Stratified* Squamous* Description Five or more Layers Cuboidal at the base Squamous at the surface Function Protects underlying tissue from abrasion location Linings of the mouth, esophagus, vagina Epidermis of the skin Outermost cells without nuclei Stratified Cuboidal Rare ducts of sweat glands and mammary glands pseudostratified Modified stratified Cell Arrangement Shape Description Function location Transitional Five or more Stretches urinary layers of organs different shaped permits cells distension when organs Dome-shaped at fill free surface As stretched, cells flatten Ciliated Columnar Jumbled layers of nuclei Often with goblet cells and cilia Ciliated type movement of mucus or reproductive cells Lining of upper respiratory tract, uterine tubes, and parts of the uterus Loose Connective Type Sub type Areolar tissue Loose Connective Loose Connective Adipose tissue Description gel-like matrix with visible collagen and elastic fibers Function Packing material of the body location Component of the superficial fascia. Can be found under most epithelia tissue Storge Contains predominantly Protection lipids deep to skin in various areas of the body (butt, flank, breasts). Forms layer of padding around eyes and kidneys Reticular tissue Contains many reticular fibers forming a network called stroma Provides support Resists distortion Liver Kidney Spleen Lymph Nodes Bone Marrow Image Dense connective Dense connective Dense connective Shape Dense Regular Description fibroblasts arranged in parallel rows between densely packed bundles of collagen fibers Dense irregularly Irregular arranged collagen and elastic fibers with intervening fibroblasts Function Connects Muscle Tendons to Muscle Ligaments Connects muscle to bone Stabilize position of internal organs resist tension in many directions Fibers arranged random in meshwork Elastic Tissue parallel bundles of Allow extension and recoil elastic and collagen fibers with fibroblasts interspace between them springy and resilient location Covers visceral organs superficial layers of bones, cartilages, and peripheral nerves in dermis of skin between vertebrae in walls of large blood vessels erectile tissues of penis Image Cartilage type sub type Description Hyaline cartilage matrix contains many collagen fibers and appears smooth and glassy Function location Provides stiff but between ribs and flexible support sternum Reduces friction covering bones in mobile joints Cartilage Cartilage supporting respiratory passageways Elastic cartilage Fibrocartilage Strength external ear matrix contains a large amount of elastic fibers Stretch epiglottis Similar to hyaline, but more elastic fibers Distorts without damage and returns to original shape shock absorber Rows of lacunae alternate with rows resists of thick collagen compression fibers prevents boneto-bone contact knee joint between pubic bones intervertebral discs Image