Spermatidogenesis

From Wikipedia, the free encyclopedia

Jump to: navigation, search

This article does not cite any references or sources. Please help improve this article by adding citations to reliable sources. Unsourced material may be challenged and removed. (December 2009)

Cross section of the epithelium of a seminiferous tubule showing various stages of spermatocyte development

Scheme showing analogies in the process of maturation of the ovum and the development of the spermatids (young spermatozoa).

Spermatidogenesis is the creation of spermatids from secondary spermatocytes during spermatogenesis.

Secondary spermatocytes produced earlier rapidly enter meiosis II and divide to produce haploid spermatids.

The brevity of this stage means that secondary spermatocytes are rarely seen in histological preparations.

Testes	layers Tunica vaginalis Tunica albuginea Tunica vasculosa testis Appendix Mediastinum Lobules Septa Leydig cell Sertoli cell Blood-testis barrier

Spermatogenesis	Spermatogonium Spermatocytogenesis Spermatocyte Spermatidogenesis Spermatid Spermiogenesis Spermatozoon

Other	Seminiferous tubules Tubuli seminiferi recti Rete testis Efferent ducts Epididymis Appendix Stereocilia Paradidymis Spermatic cord Vas deferens Ampulla Ejaculatory duct

Accessory
glands

Penis	root Crus Bulb Fundiform ligament Suspensory ligament body Corpus cavernosum Corpus spongiosum glans Foreskin Frenulum Corona fascia superficial/subcutaneous deep/Buck's Tunica albuginea Septum of the penis

Urinary tract	Internal urethral orifice Urethra Prostatic Intermediate Spongy Navicular fossa External urethral orifice Lacunae of Morgagni Urethral gland

Scrotum	layers skin Dartos External spermatic fascia Cremaster/Cremasteric fascia Internal spermatic fascia Perineal raphe