TRICK :-      

These are the trick to learn epithelium tissue that gonna help you a lot!

1. Simple Squamous:  𝘽𝙇𝙀𝙈
      B – Bowmans Capsule
      L- Lung Alveoli
      E- Endothelium
      M – Mesothelium

2. Simple Cuboidal:  𝙍𝙊𝙏
     R- Renal tubules
     O -Outer Enamel Epithelium
     T- Thyroid Follicles

3. Simple Columnar: 𝘽𝙄𝙂 𝙎𝙄𝙍
    B – Brain
    I – Intestines
    G- Gall Bladder
    S- Stomach
    I – Inner Enamel Epithelium
    R – Resp Tract

4. Pseudostratified Columnar : 𝙋𝙡𝙨 𝙙𝙤𝙉𝙉𝙏 𝘽 𝙤𝙤𝙯𝙚
    P – Paranasal Sinus
    N- Nasal Cavity
    N- Nasopharynx
    T-Trachea
    B- Bronchi

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About Epithelial Layers:

Epithelial tissue consists of cells specified in sheets with strong cellular-to-cellular attachments. These protein connections maintain the cells collectively to shape a tightly related layer this is avascular but innervated in nature.  The epithelial cells are nourished through materials diffusing from blood vessels withinside the underlying connective tissue. One aspect of the epithelial cellular is orientated closer to the floor of the tissue, frame cavity, or outside surroundings and the alternative floor is joined to a basement membrane. The basement layer is non-cell in nature and enables to cement the epithelial tissue to the underlying structures.  

There are different ways of absorbing substances through the lining of the digestive tract. Regulate and eliminate the chemical substances between the basic tissues and the body cavity.

Epithelial tissue is the body’s first line of defense against physical, chemical and biological damage. Epithelial cells play a protective role in the body, control permeability, and can selectively transport substances across the surface. All substances entering the human body must pass through the epithelium.

Hope this trick helped you!