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Describing Tissues of the Human Body - Anatomy & Physiology

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  • What are the four primary tissue types in the human body?
    Epithelial, connective, muscle, and nervous tissues.
  • What are the main functions of epithelial tissue?
    Protection, absorption, filtration, excretion, secretion, and sensory reception.
  • How is epithelial tissue classified by layers?
    Simple (one layer) and stratified (multiple layers).
  • How is epithelial tissue classified by cell shape?
    Squamous (flat), cuboidal (cube-shaped), and columnar (tall column-like).
  • What is the basement membrane in epithelial tissue?
    A thin extracellular layer that anchors epithelial tissue to underlying connective tissue.
  • What are the characteristics of connective tissue?
    Cells separated by abundant extracellular matrix consisting of ground substance and fibers.
  • Name the three types of fibers found in connective tissue.
    Collagen (strength), elastic (stretch), and reticular (support) fibers.
  • What are the main functions of connective tissue?
    Binding, support, protection, insulation, and transportation of substances.
  • What are the three types of muscle tissue?
    Skeletal (voluntary), cardiac (heart), and smooth (involuntary) muscle.
  • What is the primary function of muscle tissue?
    Movement through contraction.
  • What are the two main cell types in nervous tissue?
    Neurons (signal transmission) and neuroglia (support cells).
  • What is the function of nervous tissue?
    Transmit electrical signals to coordinate body functions.
  • What is the extracellular matrix composed of in connective tissue?
    Ground substance and protein fibers.
  • What is the difference between loose and dense connective tissue?
    Loose connective tissue has more ground substance and fewer fibers; dense connective tissue has more fibers and less ground substance.
  • What type of connective tissue stores fat?
    Adipose tissue.
  • What is the role of cartilage in connective tissue?
    Provides flexible support and cushioning in joints and structures.
  • What is the function of bone tissue?
    Support, protection, and mineral storage.
  • What is the function of blood as a connective tissue?
    Transportation of nutrients, gases, and waste.
  • What are the characteristics of skeletal muscle tissue?
    Voluntary, striated, multinucleated cells attached to bones.
  • What distinguishes cardiac muscle tissue?
    Involuntary, striated, branched cells with intercalated discs.
  • What are the features of smooth muscle tissue?
    Involuntary, non-striated, spindle-shaped cells found in walls of hollow organs.
  • What is the role of neuroglia in nervous tissue?
    Support, protect, and nourish neurons.
  • What is the function of the basement membrane in epithelial tissue?
    Anchors epithelium to connective tissue and acts as a selective filter.
  • What is the significance of polarity in epithelial cells?
    Epithelial cells have an apical surface exposed to the body exterior or cavity and a basal surface attached to the basement membrane.
  • What is the function of goblet cells in epithelial tissue?
    Secrete mucus to lubricate and protect surfaces.