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Organ Histology (Small Intestine (Mucosa (Simple Columnar Epithelium…

- - - - Located in between villi.
    - - Dense bundles of muscles, deepest part of mucosa.
    - - Brush Border
        
        Made by microvilli.
      - Intestinal Glands
        
        Starts at the simple columnar epithelium, and dives down to make them in the mucosa. They look rounded.
  - - - Located in the submucosa, tubular shaped.
  - - - Looks longitudinal, thicker layer.
    - - Looks cross-sectioned.
- - - - "Radiating Crown", surrounds the zona pellucida.
    - - Fluid filled space.
    - - Protective coating around oocyte, and it looks pink.
    - - Round purple cells found in the mature follicle. The ones around the oocyte are termed corona radiata.
- - - - Special type of simple epithelium.
    - - Runs next to mucosa, made of areolar connective tissue.
- - - - Under stratified squamous epithelium layer.
    - - "Folded" muscle, looks chunky.
    - - Flat squamous epithelium cells in layers.
- - - - In between epithelial layer. Also found near the muscularis mucosa.
    - - Found deeper into the mucosa.
    - - Openings at the top, more squared off, and lighter in color.
    - - Deepest part of mucosa, multipple bands of muscle.
    - - Uni-layered columnar epithelium that lines most organs of the digestive tract.
- - - - Usually big, cloud looking, and is stained purple.
  - - - Contains "stretched" out nuclei.
    - - Contains "normal" looking nuclei.
  - - - Look like "rivers" between the glands.
    - - Very thin layer, deep to the simple columnar epithelium.
    - - Almost all of the goblet cells are found here.
- - - - Dome-shaped apical surface, "eyes" looking at you.
    - - Thicker layer, you can see blood vessels.
- - - - Allows organ to stretch.
    - - Deep to epithelium.
- - - - Made of simple cuboidal epithelium. Easiest to find by locating longitudinal lumen.
    - - In between each kidney tubule, white space. More lumen in the medulla, and less in the cortex.
    - - What kidney tubules are made of.
  - - - Glomerulus
        
        Middle of renal corpuscle, a bundle of capillaries. Think "yarn".
      - Capsular Space
        
        Space in between the glomerular capsule and glomerulus. It is unstained, and looks white.
      - Ball-shape structures.
      - Glomerular Capsule
        
        Thin layer made of simple squamous epithelium.
      - Simple Squamous Epithelium
- - - - Found in between the sinusoids and hepatocytes. Slide looks very dirty, very black.
    - - "White cracks" found throughout the lobule.
    - - Liver cells, makes up the majority of cells in the lobule.
    - - Roughly in the middle of the lobule, a white hole.
    - - Hepatic Portal Vein
        
        Thin wall, big lumen.
      - Bile Duct
        
        You can see simple cuboidal epithelium.
      - Hepatic Artery
        
        Thick wall, small lumen.
      - Corners of lobule.