Epithelial cells

The epithelial cellsThey are the cells that line the internal and external surfaces of the body, forming masses or cellular layers (epithelium). The epithelial cells may be ordered in the cylinder or in parallel rows or lack ordination, it varies in size, shape and stage of degeneration. Cells appearing in parallel rows are thought to come from the same tubular segment, while cells that are unordered come from different portions of the tubule. Epithelial cells have minimal hairs called cilia, which help to remove foreign substances. The epithelial cells that line the skin, mouth, nose, and anal canal derive from the ectoderm; those that line the respiratory and digestive systems derive from the endoderm, the others (cardiovascular system and lymphatic system) from the mesoderm.


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  • 1 Summary
  • 2 Biopsy and examination of epithelial cells
  • 3 High presence of epithelial cells
    • 1 Symptoms
  • 4 Treatment of bacterial vaginosis
  • 5 General characteristics of epithelial tissues
  • 6 Sources


The epithelium designates the cellular tissue that lines the external surface of the organism (skin and mucosa) and the internal cavities. The epithelium is made up of epithelial cells , of very varied shapes and dimensions. The mucosa of the vagina is also made up of epithelial cells. They are formed as a sequence of urinary ecstasy and desquamation of tubular epithelial cells . Epithelial casts may appear in the urine after exposure to nephrotoxic agents or viruses , causing degeneration and tubular necrosis. They can also appear in severe chronic kidney disease , in which tubular damage accompanies glomerular damage., and in the rejection of the allo graft of the kidney.

Biopsy and examination of epithelial cells

During the gynecological examination, the gynecologist can detect the signs of an imbalance of the bacterial flora of the vagina (for example: inflammation).

These signs may be accompanied by other symptoms identified by the patient, such as vaginal discharge .

During a cervical-vaginal smear , some epithelial cells are removed for clinical examination. The analysis of epithelial cells is called colpocytology .

This analysis confirms the diagnosis of eventual vaginosis, mostly of bacterial origin (60% of vaginal infections ) or mycosis ( candidiasis ).

High presence of epithelial cells

A high number of epithelial cells and the presence of germs on them indicate a bacterial infection .

Different bacteria can be the cause of a vaginal infection, sexually transmitted or not. The responsible germs are identified after cultivation in the appropriate media. The most frequent are:

  • Gardnerella vaginalis
  • Gardnerella mobiluncus
  • Chlamydia phacomatosis
  • Mycoplasma hominis
  • Peptostreptococcus species
  • Ureaplasma urealyticum

A cervical-vaginal smear can detect other types of pathologies: such as Trichomonas vaginalis (parasitosis) or more frequently a vaginal mycosis (caused by the candida albicans fungus).


  • Gynecological exam: How often? »Tips: Although the woman does not have any particular symptoms, she should visit her gynecologist once a year. What is this annual visit for? What is the gynecological checkup? The medical history should include a physical examination. What …
  • Cytobacterial examination of urine]]
  • Urine culture microscopic examination: Normal values ​​from a urine test.
  • Abnormal results: Indicators of urinary infection, leukocytes, bacteria. Bacteria responsible for infections …
  • Urine Test (Solved) »Hello, the urine test came out lucosites 1-3 xc moderate epithelial cells and rare bacteria of rare amorphous urates
  • Result: Koillocytic epithelial cells(Solved) »Hello, good evening, today I got some results that say that I have koillocytic epithelial cells consistent with HPV and monilia spores, the doctor told me not to pay attention to the results and that I did not have nothing, I would appreciate all the …
  • Vaginal smearresult : Hello, I would like you to help me with the interpretation of the vaginal smear that was done because I have a medical appointment for up to 2 weeks, this was the result: guide cells ffv negative leukocytes ffv 0-3 xc red blood cells ffv negative bacteria .

Bacterial vaginosis treatment

The vaginal infections of bacterial origin are treated by antibiotics, which may be administered in different forms: tablets, gel or cream.

General characteristics of epithelial tissues

  • In epithelial tissues, cells are tightly bound together to form sheets. The extracellular matrixis scarce and is located below those of epithelial cells. It forms a thin layer called the basal lamina .
  • The cells withstand mechanical stresses, through resistant protein filaments that cross each other, in the cytoplasm of each epithelial cell, forming the cytoskeleton . To transmit mechanical stress from one cell to the next, these filaments are attached to transmembrane proteins located at specialized sites on the cell membrane. These proteins are associated, in the intercellular space, either with similar proteins in the membrane of adjacent cells, or with proteins that are characteristic of the underlying basal lamina.
  • The epithelial tissues limit both the internal cavities and the free surfaces of the body. The presence of specialized junctions between your cells allows epithelia to form barriers to the movement of water, solutes, or cells from one body compartment to another. As illustrated in Figure 3, an epithelium separates the intestinal lumenfrom the underlying tissues; and an epithelium separates the intestinal wall from the abdominal cavity.


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