Germinal epithelium (male)
Germinal epithelium of the testicle. 1 basal lamina, 2 spermatogonia, 3 spermatocyte 1st order, 4 spermatocyte 2nd order, 5 spermatid, 6 mature spermatid, 7 Sertoli cell, 8 tight junction (blood testis barrier)
Identifiers
MeSH	D012670
Anatomical terminology [edit on Wikidata

The germinal epithelium is the epithelial layer of the seminiferous tubules of the testicles. It is also known as the wall of the seminiferous tubules. The cells in the epithelium are connected via tight junctions.

There are two types of cells in the germinal epithelium. The large Sertoli cells (which are not dividing) function as supportive cells to the developing sperm. The second cell type are the cells belonging to the spermatogenic cell lineage. These develop to eventually become sperm cells (spermatozoon). Typically, the spermatogenic cells will make four to eight layers in the germinal epithelium.^[1]

References

This article incorporates text in the public domain from the 20th edition of Gray's Anatomy (1918)

External links

• Histology image: 17803loa – Histology Learning System at Boston University - "Male Reproductive System: testis, germinal epithelium"
• Anatomy Atlases – Microscopic Anatomy, plate 02.21 - "Stratified Germinal Epithelium"
• Swiss embryology (from UL, UB, and UF) cgametogen/spermato02

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