Matt Tissues Project
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Matt Tissues Project

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Matt Tissues Project Matt Tissues Project Presentation Transcript

  • Tissues
    • Group of cells similar in structure and function
    • 4 different types with numerous varieties
    Epithelial , Connective , Muscle , Nervous , Credits
  • Epithelial
    • Sheet of cells covering a body surface or lining a body cavity
    • Forms boundaries between different environments
    • Accomplishes many functions
    • 3 types
    Simple Epithelia , Stratified Epithelia , Transitional Epithelia
  • Simple Epithelial Tissue
    • Single cell layer
    • Thin epithelial barrier
    • All cells have same basic shape
    • 4 types
    Simple Squamous , Simple Cuboidal , Simple Columnar , Pseudostratified Columnar
  • Simple Squamous Epithelium
    • Single layer of flattened cells
    • Disc shaped nuclei
    • Sparse cytoplasm
    • Functions – diffusion, filtration
    • Found where it functions are a priority
    Simple Cuboidal , Simple Columnar , Pseudostratified Columnar
  • Simple Cuboidal Epithelium
    • Single layer of cube like cells
    • Functions – secretion and absorption
    • Forms walls in gland ducts and kidney tubules
    Simple Squamous , Simple Columnar , Pseudostratified Columnar
  • Simple Columnar Epithelium
    • Single layer of tall cells with round nuclei
    • Many cells have cillia
    • May contain goblet cells
    • Functions – absorption and secretion
    Simple Squamous , Simple Cuboidal , Pseudostratified Columnar
  • Pseudostratified Columnar Epithelium
    • Single layer of cells of varying heights
    • Nuclei at different levels
    • Functions – Secretion and propulsion
    • In male sperm carrying ducts and trachea
    Simple Squamous, Simple Cuboidal, Simple Columnar
  • Stratified Epithelia
    • Two or more stacked cell layers
    • Regenerate from below
    • More durable than simple epithelia
    • Major role is protection
    Stratified Squamous, Stratified Cuboidal, Stratified Columnar
  • Stratified Squamous Epithelium
    • Thick membrane with several cell layers
    • protects underlying tissues
    • Forms external epidermis
    • Found in esophagus, mouth, and vagina
    Stratified Cuboidal, Stratified Columnar
  • Stratified Cuboidal Epithelium
    • Two cell layers thick
    • Rare in body
    • Found in some sweat and mammary glands
    Stratified Squamous, Stratified Columnar
  • Stratified Columnar Epithelium
    • Limited distribution in body
    • Apical layer of columnar cells
    • Found in pharynx and male urethra
    • Occurs at transitional areas
    Stratified Squamous, Stratified Cuboidal
  • Transitional Epithelium
    • Several cell layers
    • Cuboidal basal cells and dome shaped surface cells
    • Stretches for distention of bladder
    • Lines ureters and bladder
  • Connective Tissue
    • Most abundant primary tissue
    • Have a common origin
    • Have a ground substance, fibers, and cells
    • Accomplish many functions
    • 4 main types with several subtypes
    Connective Tissue Proper, Cartilage, Bone, Blood
  • Connective Tissue Proper
    • All mature connective tissues
    • 2 subclasses – loose (areolar, adipose, reticular) and dense (dense regular, dense irregular)
    Areolar, Adipose, Reticular, Dense Regular, Dense Irregular
  • Areolar Tissue
    • Gel-like matrix with three connective tissue fibers
    • Wraps and cushion organs
    • Found throughout the body
    Adipose, Reticular, Dense Regular, Dense Irregular
  • Adipose Tissue
    • Matrix with closely packed adipocytes
    • Reserves food fuels
    • Supports and protects organs
    • Found under skin
    • Serves needs of active organs
    Areolar, Reticular, Dense Regular, Dense Irregular
  • Reticular Tissue
    • Loose ground substance with reticular fibers
    • Reticular cells are on fiber network
    • Forms stroma supporting other cell types
    • Found in lymphoid organs
    Areolar, Adipose, Dense Regular, Dense Irregular
  • Dense Regular Tissue
    • Parallel collagen fibers
    • Few elastic fibers
    • Has fibroblasts
    • Attaches muscle to bone or muscle and bone to bone
    • Found in tendons and ligaments
    Areolar, Adipose, Reticular, Dense Irregular
  • Dense Irregular Tissue
    • Irregularly arranged collagen fibers
    • Some elastic fibers
    • Has fibroblasts
    • Withstands tension
    • Found in dermis, submucosa, organs and joints.
    Areolar, Adipose, Reticular, Dense Regular
  • Cartilage
    • Has qualities between dense connective tissue and bone
    • Tough but flexible
    • Receives nutrients by diffusion from blood
    • Cartilage matrix has tissue fluid
    • Chondroblasts produce new matrix until end of adolescence
    • 3 types
    Hyaline Cartilage, Elastic Cartilage, Fibrocartilage
  • Hyaline Cartilage
    • Amphorous and firm matrix
    • Chondrocytes in lacunae
    • Supports and reinforces, cushions, resists compressions
    • Is costal cartilage
    • Found in embryonic skeleton, nose, ends of bones
    Elastic Cartilage, Fibrocartilage
  • Elastic Cartilage
    • Similar to hyaline cartilage with more elastic fibers
    • Maintains structure while allowing flexibility
    • Found in external ear and epiglottus
    Hyaline Cartilage, Fibrocartilage
  • Fibrocartilage
    • Similar to hyaline cartilage but less firm
    • Tensile strenth
    • Absorbs compressive shock
    • Found in intervertebral discs, pubic symphisis, and discs of knee joint
    Hyaline Cartilage, Elastic Cartilage
  • Bone
    • Hard, calcified matrix with many collagen fibers
    • Has osteocytes in lacunae
    • Well vascularized
    • Supports, protects, and provides levers for muscular reaction
    • Stores calcium and minerals
  • Blood
    • Red and white cells in plasma
    • Transports respiratory gases, nutrients, and waste
    • Contained within blood vessels
  • Muscle Tissue
    • Highly cellular
    • Responsible for most body movement
    • Contain myofilaments
    • 3 kinds
    Skeletal Muscle, Cardiac Muscle, Smooth Muscle
  • Skeletal Muscle
    • Long, cylindrical, and multinucleate
    • Obvious striations
    • Control voluntary movement
    • Attached to bones or skin
    Cardiac Muscle, Smooth Muscle
  • Cardiac Muscle
    • Branching, striated cells that interlock
    • Propels blood into circulation
    • Found in walls of the heart
    Skeletal Muscle, Smooth Muscle
  • Smooth Muscle
    • Spindle shaped cells
    • Central nuclei
    • No striations
    • Propels substances along internal passageways
    • Found in walls of hollow organs
    Skeletal Muscle, Cardiac Muscle
  • Nervous Tissue
    • Main component of nervous system
    • Contains branched neurons with long cellular processes
    • Transmits electrical signals
    • Found in brain and spinal cords
  • Credits
    • Voice – Me
    • Reticular, Dense Irregular, Stratified Cuboidal, and Connective Tissue Proper slides – somewhere on the internet (the internet was down at the time and I forgot the URLs)
    • All other pictures - Me