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Anatomy & Physiology: Tissue Histology Part 1

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Termini in questo insieme (22)

  • What are the two main criteria used to identify epithelial tissue?
    Epithelial tissue is identified by the number of layers (simple or stratified) and cell shape (squamous, cuboidal, or columnar).
  • Define simple squamous epithelium and its primary function.
    Simple squamous epithelium is a single layer of flat cells that reduces friction, controls vessel permeability, and performs absorption and secretion.
  • Where is simple squamous epithelium commonly found?
    It lines mesothelia, pleural, pericardial, and peritoneal body cavities; endothelia of heart and blood vessels; kidney tubules; and alveoli of lungs.
  • What is the main function of simple cuboidal epithelium?
    Simple cuboidal epithelium provides limited protection and is involved in secretory absorption.
  • Where is simple cuboidal epithelium typically located?
    It is found in glands, ducts, portions of kidney tubules, and thyroid gland.
  • Describe the structure and function of simple columnar epithelium.
    Simple columnar epithelium consists of a single layer of tall cells specialized for protection, secretion, and absorption.
  • List common locations of simple columnar epithelium.
    It lines the stomach, intestine, gallbladder, uterine tubes, and collecting ducts of kidneys.
  • What distinguishes stratified squamous epithelium from simple squamous epithelium?
    Stratified squamous epithelium has multiple layers providing physical protection against abrasion, pathogens, and chemical attack, unlike the single layer of simple squamous.
  • Where is stratified squamous epithelium found?
    It covers the surface of the skin and lines the oral cavity, throat, esophagus, rectum, anus, and vagina.
  • What is pseudostratified ciliated columnar epithelium and its function?
    This epithelium appears layered due to uneven nuclei but is a single layer; it functions in protection and secretion, often with cilia to move mucus.
  • Where is pseudostratified ciliated columnar epithelium located?
    It lines the nasal cavity, trachea, bronchi, and portions of the male reproductive tract.
  • What is the role of transitional epithelium?
    Transitional epithelium permits expansion and recoil after stretching, adapting to volume changes.
  • Where is transitional epithelium found?
    It lines the urinary bladder, renal pelvis, and ureters.
  • How is connective tissue classified?
    Connective tissue is classified by its extracellular matrix into connective tissue proper, fluid connective tissue, and supporting connective tissue.
  • What are the two types of connective tissue proper?
    Connective tissue proper is divided into loose (areolar, adipose, reticular) and dense (regular, irregular, elastic) connective tissues.
  • Describe areolar tissue and its function.
    Areolar tissue cushions organs, provides support but permits movement, and contains phagocytic cells for defense.
  • Where is adipose tissue located and what is its function?
    Adipose tissue is found deep to the skin, especially at sides, buttocks, breasts, and around eyes and kidneys; it provides padding, cushions shocks, insulates, and stores energy.
  • What is the function of reticular tissue?
    Reticular tissue provides a supporting framework in the liver, kidney, spleen, lymph nodes, and bone marrow.
  • What characterizes dense regular connective tissue?
    Dense regular connective tissue has tightly packed collagen fibers aligned parallel, providing firm attachment and resistance to pulling forces.
  • Where is dense regular connective tissue found?
    It is found in tendons, aponeuroses, ligaments, and covering skeletal muscles.
  • What are the key features and functions of hyaline cartilage?
    Hyaline cartilage provides stiff but flexible support, reduces friction between bone surfaces, and has a translucent matrix without prominent fibers.
  • Where is hyaline cartilage located?
    It is located between ribs and bones of the sternum, covering bone surfaces at synovial joints, supporting the larynx, trachea, bronchi, and forming part of the nasal septum.