Tissues

• What are the main tissue types in the human body?

  Connective, Epithelial, Muscle, Neural

  
• What is histology?

  The study of tissues
• What are the functions of connective tissue?

  • Support and protection
  • Transportation
  • Energy reserve storage
  • Defence
• What are the basic components of connective tissue?

  Specialised cells and extracellular matrix

  
• What are collagen fibres known for?

  High tensile strength
• What is the ground substance in connective tissue?

  Fills spaces between cells and fibres
• What are the types of connective tissue?

  1. Connective tissue proper
  2. Fluid connective tissues
  3. Supportive connective tissues
• What is the role of fibroblasts in connective tissue proper?

  Produce connective tissue fibres and ground substance
• What is the function of red blood cells?

  Transport O2 and CO2
• What is the primary characteristic of cartilage?

  Firm gel containing embedded fibres
• What are the types of cartilage and their functions?

  • Hyaline: Provides support, reduces friction
  • Elastic: Tolerates distortion without damage
  • Fibrocartilage: Resists compression, prevents bone contact
• What is the main function of bone tissue?

  Support and protect organs
• What defines epithelial tissue?

  Cells covering surfaces and lining cavities
• What are examples of epithelial tissue locations?

  • Skin
  • Lining of digestive tract
  • Lining of respiratory tract
  • Lining of cavities around heart and lungs

  
• What are the functions of epithelial tissue?

  Control permeability, provide protection, sensation, secretion
• What is the basement membrane's role?

  Connects epithelial cells to connective tissue
• What are the types of glandular secretion?

  • Endocrine: Hormones into blood
  • Exocrine: Products onto surfaces
• What is the significance of microvilli on epithelial surfaces?

  Increases surface area for absorption or secretion
• What is the difference between merocrine and holocrine secretion?

  Merocrine releases by exocytosis; holocrine bursts
• What are the three types of muscle tissue?

  1. Skeletal
  2. Cardiac
  3. Smooth
• What characterizes skeletal muscle tissue?

  Large, multinucleated, striated, voluntary

  
• What is unique about cardiac muscle tissue?

  Striated, involuntary, interconnected at discs

  
• What defines smooth muscle tissue?

  Small, non-striated, involuntary muscle

  
• What are the properties of skeletal, cardiac, and smooth muscle?

  • Skeletal: Long, striated, multinucleate
  • Cardiac: Short, branched, striated, single nucleus
  • Smooth: Short, spindle-shaped, non-striated, single nucleus
• What is the primary function of nervous tissue?

  Transmit electrochemical signals via nerve impulses
• What are the two types of cells in nervous tissue?

  • Neurons: Communicate via signals
  • Neuroglia: Support and nourish neurons
• What are the three main parts of a neuron?

  Cell body, dendrites, axon
• What are the four types of tissue membranes?

  • Mucous membranes
  • Serous membranes
  • Cutaneous membranes
  • Synovial membranes
• What is the function of mucous membranes?

  Line passageways and chambers, coated with mucus
• What is the cutaneous membrane also known as?

  The skin
• What is the role of synovial membranes?

  Line joint cavities and produce synovial fluid
• How does aging affect tissue repair?

  • Decreases speed and efficacy
  • Epithelia thins
  • Connective tissue becomes fragile
• What happens to cardiac tissue with age?

  It becomes irreplaceable