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. Mouse stem cells were grown into cells resembling spermatids in 2016. These spermatids, when injected into mouse eggs, were able to produce pups.[1]
References
Male reproductive system |
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Internal | Seminal tract | Testicles |
- Layers
- Tunica vaginalis
- Tunica albuginea
- Tunica vasculosa
- Appendix
- Mediastinum
- Lobules
- Septa
- Leydig cells
- Sertoli cells
- Blood–testis barrier
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Spermatogenesis | |
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Other |
- Seminiferous tubules
- Tubuli seminiferi recti
- Retia testes
- Efferent ducts
- Epididymides
- Appendix
- Inferior ligaments
- Superior ligaments
- Stereocilia
- Paradidymides
- Spermatic cords
- Vasa deferentia
- Rectovesical pouch
- Testicular arteries
- Testicular veins
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Accessory glands |
- Seminal vesicles
- Prostate
- Urethral crest
- Seminal colliculus
- Ejaculatory ducts
- Sinus
- Ducts
- Utricle
- Bulbourethral glands
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External | Penis |
- Root
- Crura
- Bulb
- Fundiform ligament
- Suspensory ligament
- Body
- Corpora cavernosa
- Trabeculae of corpora cavernosa
- Corpus spongiosum
- Trabeculae of corpus spongiosum
- Glans
- Foreskin
- Frenulum
- Corona
- Septum glandis
- Raphe
- Fascia
- Tunica albuginea
- Septum
- Arteries
- Arteries of bulb
- Dorsal arteries
- Deep arteries
- Internal pudendal artery
- Veins
- Dorsal veins
- Vein of bulb
- Internal pudendal veins
- Nerves
- Dorsal nerves
- Pudendal nerves
- Urethra
- Internal urethral sphincter
- Internal urethral orifice
- Pre-prostatic
- Prostatic
- Intermediate
- Spongy
- External sphincter muscle
- Navicular fossa
- External urethral orifice
- Lacunae of Morgagni
- Urethral glands
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Scrotum |
- Layers
- Skin
- Dartos fascia
- External spermatic fascia
- Cremaster
- Cremasteric fascia
- Internal spermatic fascia
- Ligament
- Raphe
- Septum
- Arteries
- Anterior scrotal arteries
- Posterior scrotal arteries
- Nerves
- Anterior scrotal nerves
- Posterior scrotal nerves
- Perineal nerve
- Posterior scrotal veins
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