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Jesus Carranza Period 2 Histology - Coggle Diagram

- - - - Location: kidney glomeruli; air sacs of lungs; lining of heart, blood vessels, and lymphatic vessels
      - Structure: 1 layer, flattened cells
      - Characteristics: nuclei= flat oval shape, branhces
      - Function: allow materials to pass by diffusion and filtration in sites where protection is not important
    - - Characteristics: nuclei= sphere,
      - Location: Kidney tubules; ducts and secretory portions of small glands; ovary surface
      - Structure: 1 layer, cells are cube shaped
      - Function: Secretion and absorption
    - - Location: Stomach and intestines
      - Structure :1 layer, cells are elongated
      - Characteristics: nuclei= oval shaped, may contain cilia, goblet cells, microvilli
      - Fucntion: Absorption; secretion of mucus, enzymes, and other substances; ciliated type propels mucus by ciliary action
  - - - Location: nonkeratinized type forms the moist linings of the esophagus, mouth, and vagina; keratinized variety forms the epidermis of the skin, a dry epithelium
      - Structure: Multiple layers, basal=cubioal/columnar, apical=squamous
      - Characteristics: Thick, rice pudding
      - Function: protect underlying tissues in areas subjected to abrasion
    - - Function: Protects areas such as ducts of sweat glands, mammary glands, and salivary glands
      - Structure: Multiple layers, small-> large
      - Location: Found in the excretory ducts of your salivary and sweat glands
      - Characteristics: cells= cuboidal, the moon
    - - Location: Nonciliated types of lines most of the digestive tract, gallbladder, and excretory ducts to some glands; ciliated variety lines small bronchi, uterine tubes, and some regions of the uterus
      - Structure: multiple layers, long cells, tics
      - Charcateritscs: cells = tall and thin
      - Function: providing protection and secretion
  - - - Location: Ciliated variety lines the trachea and most of the upper respiratory tract; nonciliated type in males' sperm-carrying ducts and ducts of large glands.
      - Structure: 1 layer, false layers, multiple cell lengths
      - Characteristics: different heights, nuclei not all same height, may contain cilia and goblet cells
      - Function: Secrete substances, particularly mucus; propulsion of mucus by ciliary action
- - - - Location: Supports external ear (pinna); epiglottis
      - Structure: Amorphous/firm matrix, collagen fiber = network
      - Characteristics: chondroblasts produce matrix, chondrocytes in lacunae, elastic fibers in matrix, looks like a lollipop
      - Function: Maintains the shape of a structure while allowing great flexibility
    - - Structure: Amorphous matrix, thick collagen fiber predominate = network
      - Location: Intervertebral discs; punic symphysis; dics of knee joint
      - Characteristics: chondroblasts produce matrix, chondrocytes in lacunae, looks like a stretched out poofa
      - Function: Tensile strength allows it to absorb compressive shock
    - - Location: Forms most of the embryonic skeleton; covers the ends of long bones in joint cavities; forms costal cartilages of the ribs; cartilages of the nose, trachea, and larynx
      - Structure: Amorphous/firm matrix, collagen fiber = network,
      - Characteristics: chondroblasts produce matrix, chondrocytes in lacunae
      - Function: Support and reinforces; serves as resilient cushion; resists compressive stress
  - - - Areolar
        
        Characteristics: cells: fibroblasts, macrophages, mast cells and some white blood cells
        
        Location: Widely distributed under epithelia of body, e.g., forms lamina propria of mucous membranes; packages organs; surrounds
        capillaries
        
        Structure: Gel like matrix, 3 fiber types
        
        Function: Wraps and cushions organs; its macrophages phagocytize bacteria; plays important role in inflammation; holds and conveys tissue fluid
      - Reticular
        
        Location: Lymphoid organs (lymph nodes, bone marrow, and spleen)
        
        Structure: Gel like ground substance, Loose reticular fibers
        
        Characteristics: reticular cells lie on fibers, looks like a berry tree
        
        Function: Fibers form a soft internal skeleton (stroma) that supports other cell types including white blood cells, mast cells, and macrophages
      - Adipose
        
        Location: Under skin in subcutaneous tissue; around kidneys and eyeballs; within abdomen; in breasts
        
        Structure: Gel like matrix (sparse), adipocytes compacted
        
        Characteristics: large fat droplet pushes nucleus, looks like rice pudding
        
        Function: Provides reserve food fuel; insulates against heat loss; supports and protects organs
    - - Regular
        
        Location: Tendons, most ligaments, aponeuroses
        
        Structure: Parallel collagen fibers; few elastic
        
        Characteristics: cell type is fibroblast, looks like marble
        
        Function: Attaches muscles to bones or to muscles; attaches bones to bones; withstands great tensile stress when pulling force is applied in one direction
- - - - Ductless glands
      - Secretions are not released into a duct; are released into surrounding interstitial fluid, which is picked up by circulatory system
      - Secrete (by exocytosis) hormones, messenger chemicals that travel through lymph or blood to their specific target organs
  - - - mucous cells and goblet cells
      - Found in epithelial linings of intestinal and respiratory tracts
      - produce mucin
    - - Secrete products into ducts
      - Secretions are released onto body surfaces, such as skin, or into body cavities