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TESTIS-DESCENT

Anatomy-Abdomen

TESTIS-DESCENT

1. Derived from the gonadal ridge medial to the mesonephric ridge of the intermediate cell mass.
2. An elongated diverticulum of the peritoneal cavity, the processus vaginalis preceeds the testis through the inguinal canal into the scrotum, and the testis moves down behind this.
3. The processus becomes obliterated except at its lower end where the testis bulges into it to become the tunica albuginea.
4. Failure to descend may result in cryptochidism.

TIMING
5. 4th fetal month - near the deep inguinal ring.
6. 7th fetal month - within deep inguinal ring.
7. In the next few days to weeks, it descends into the scrotum.


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REFERENCES

1. Mcminn. (2003). Last's Anatomy. Elsevier Australia. ISBN:0729537528. Read it at Google Books - Find it at Amazon
2. Netter, F. H. (2019). Atlas of human anatomy. Philadelphia, PA: Elsevier.
3. Image: no reference available.

Ⓒ A. Manickam 2018

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