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Ashley Taylor Tissues

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  • 1. Tissues
    • Group of cells with similar structure and function.
    • Four primary types.
    • Each type has its own basic role in the body
    • Organized into organs such as the kidney and the heart.
    • Epithelial / Muscle / Connective / Nervous / Credits
  • 2. Epithelial Tissue
    • Sheet of cells that cover a body surface.
    • Form boundaries between different environments.
    • Role as an interface tissue allows many functions.
    • Classified by its shape and number of layers
    • Simple / Stratified / Glandular / Home
  • 3. Simple Epithelia
    • One of the names given to the epithelia in the classification system
    • All types have a single layer of cells
    • Generally located where absorption, filtration, and secretion occur
    • Simple Squamous / Simple Cuboidal / Simple Columnar / Pseudostratified Columnar / Epithelial / Home
  • 4. Simple Squamous
    • Made up of cells flattened laterally with sparse cytoplasm.
    • Functions in diffusion and filtration
    • Create a smooth resistance-free lining in the lymphatic and cardiovascular systems
    • Two types: endothelium and mesothelium
    • Simple Cuboidal / Simple Columnar / Pseudostratified Columnar / Simple Epithelia / Epithelial / Home .
  • 5. Simple Cuboidal
    • Cells are cube-shaped with spherical nuclei
    • Main functions are secretion and absorption
    • Forms walls of the smallest ducts of glands and of kidney tubules
    • Simple Squamous / Simple Columnar / Pseudostratified Columnar / Simple Epithelia / Epithelial / Home .
  • 6. Simple Columnar
    • Tall, closely packed cells.
    • Lines the digestive tract.
    • Contains dense microvilli and goblet cells.
    • Simple Squamous / Simple Cuboidal / Pseudostratified Columnar / Simple Epithelia / Epithelial / Home .
  • 7. Pseudostratified Columnar
    • Cells varying in height
    • Function in the secretion and propulsion of mucus
    • Present in male sperm-carrying ducts and trachea
    • Ciliated and non-ciliated versions
    • Simple Squamous / Simple Cuboidal / Simple Columnar / Simple Epithelia / Epithelial / Home
  • 8. Stratified Epithelium
    • Second name given to epithelia in the classification system
    • Consists of two or more cell layers
    • Regenerate cells from below
    • More durable than the simple epithelium
    • Major role is protection
    • Stratified Squamous / Stratified Cuboidal / Stratified Columnar / Transitional / Epithelial Tissue / Home
  • 9. Stratified Squamous Epithelium
    • Thick membrane
    • Role is in the protection of underlying areas
    • Form the external part of the skin
    • Keratinized and nonkeratinized versions
    • Stratified Cuboidal / Stratified Columnar / Transitional / Stratified Epithelium / Epithelial / Home
  • 10. Stratified Cuboidal
    • Quite rare form of stratified epithelium
    • Found in the ducts of some larger glands
    • Typically two layers of cells thick
    • Stratified Squamous / Stratified Columnar / Transitional / Stratified Epithelium / Epithelial / Home
  • 11. Stratified Columnar
    • Limited distribution of stratified columnar epithelium throughout the body.
    • Small amounts found in the pharynx and male urethra
    • Lines some of the glandular ducts
    • Found in the “transitional areas”
    • Stratified Squamous / Stratified Cuboidal / Transitional / Epithelial / Home
  • 12. Transitional Epithelium
    • Lines the hollow urinary organs
    • Its basal cell layer usually consists of cuboidal or columnar cells
    • Cells stretch to allow expansion
    • Stratified Squamous / Stratified Cuboidal / Stratified Columnar / Stratified Epithelium / Epithelial / Home
  • 13. Glandular Epithelium
    • Glands consist of one or more cells
    • Secrete a particular product
    • Classified as either endocrine or exocrine glands
    • Endocrine / Exocrine / Epithelial / Home
  • 14. Endocrine Glands
    • Often called the “ductless glands”
    • Produce hormones excreted by exocytosis
    • Structurally diverse
    • Glandular Epithelium / Exocrine Glands / Epithelial / Home
  • 15. Exocrine Glands
    • More numerous than the endocrine glands
    • Secrete products onto body surfaces or into body cavities
    • Multicellular and unicellular versions
    • Endocrine Glands / Glandular Epithelium / Epithelial / Home
  • 16. Connective Tissue
    • Most numerous of the primary tissues
    • Binds and supports, protects, insulates, and transports
    • Made up of three main elements
    • Mesenchyme is their common tissue of origin
    • Connective Tissue Proper / Cartilage / Bone / Blood / Home
  • 17. Connective Tissue Proper
    • Made up of two subclasses: loose and dense connective tissue
    • Includes all mature tissues except bone, blood, and cartilage
    • ADD MORE
    • Loose Connective Tissue / Dense Connective Tissue / Connective Tissue / Home
  • 18. Loose Connective Tissue
    • Three types: areolar (as pictured), adipose, and reticular
    • Areolar connective tissue cushions organs
    • Adipose connective tissue reserves food stores, insulates against heat loss, and supports and protects
    • Reticular connective tissue forms a soft internal skeleton to support other cell types
    • Dense Connective Tissue / Connective Tissue Proper / Connective Tissue / Home
  • 19. Dense Connective Tissue
    • Fibers are its predominant element
    • Consists of dense regular and dense irregular tissue
    • Attaches muscles to bone or other muscles and bone to bone
    • Loose Connective Tissue / Connective Tissue Proper / Connective Tissue / Home
  • 20. Cartilage Tissue
    • Possesses qualities transitional of the dense connective tissue and bone
    • Tough but flexible
    • Chondroblasts are its predominant cell type
    • Hyaline Cartilage / Elastic Cartilage / Fibrocartilage / Connective Tissue / Home
  • 21. Hyaline Cartilage
    • Most abundant cartilage type
    • Supports, reinforces, cushions, and resists compression
    • Found in the embryonic skeleton
    • Elastic Cartilage Tissue / Fibrocartilage / Cartilage / Connective / Home
  • 22. Elastic Cartilage
    • More elastic fibers allow for stretch ability
    • Nearly identical to hyaline cartilage
    • Supports ear “skeleton” and epiglottis
    • Hyaline Cartilage / Fibrocartilage / Cartilage / Connective / Home
  • 23. Fibrocartilage Cartilage
    • Characteristics in between hyaline cartilage and dense regular connective tissues
    • Compressible and resists tension
    • Found in the vertebral discs and makes up cartilage of knee joint
    • Hyaline Cartilage / Elastic Cartilage / Cartilage / Connective / Home
  • 24. Bone Tissue
    • Hard, calcified matrix
    • Supports and protects
    • Has cavities for fat storage
    • Connective Tissue / Home
  • 25. Blood Tissue
    • Makes up fluid within blood vessels
    • Transports respiratory gases, nutrients, and wastes
    • ADD MORE
    • Connective Tissue / Home
  • 26. Muscle Tissue
    • Responsible fore most types of body movement
    • Possess myofilaments
    • Three different types: smooth, skeletal, and cardiac muscle tissue
    • Smooth Muscle / Skeletal Muscle / Cardiac Muscle / Home
  • 27. Smooth Muscle Tissue
    • Spindle-shaped cells
    • Found in the walls of hollow organs
    • Propels substances along internal passageways
    • Skeletal Tissue / Cardiac Tissue / Muscle Tissue / Home
  • 28. Skeletal Muscle Tissue
    • Long, cylindrical, multinucleate cells
    • Initiates and controls voluntary movement
    • Attached to the bones of the skeleton
    • Smooth Muscle / Cardiac Muscle / Muscle Tissue / Home
  • 29. Cardiac Muscle Tissue
    • Branching, striated uninucleate cells
    • Only found in the walls of the heart
    • Propels blood to the whole body as it contracts
    • Smooth Muscle / Skeletal Muscle / Muscle Tissue / Home
  • 30. Nervous Tissue
    • Main component of the nervous system
    • Contains specialized cells called neurons
    • Found in the brain, spinal cord, and peripheral nerves
    • Home
  • 31. Credits
    • This slide show presented by Ashley Taylor:
    • All photos provided by:
    • Http://flickr.com
      • Jorrflv
      • Dragonfly- “Handle with care”
      • Slc.biol- “PA030025”
      • Christi’s photos- “Simple squamous epithelium” and “Stratified squamous epithelium keratinized”
      • Eecue- “Pig Motor Nerve” and “Dense Connective Tissue”
      • Greenflames09- “Thyroid Gland 7”
      • Akay- “hyalinecartilage”
      • Krisheding- “Skeletal shoulder” and “Skeletal hand”
    • All Text Provided by:
    • Marieb, N. Elaine R.N., Ph.D. and Hoehn, Katja M.D. Ph.D.“Human Anatomy and Physiology.” Pearson Education, Inc. Copyright 2007. San Fransisco, CA.
    • Home