Appendix of the epididymis

Appendix of the epididymis
The right testis, exposed by laying open the tunica vaginalis (appendix of epididymis labeled at center right)
Details
Precursor	Wolffian duct
Identifiers
Latin	appendix epididymidis
Anatomical terminology [edit on Wikidata]

The appendix of the epididymis (or pedunculated hydatid) is a small stalked appendage (sometimes duplicated) on the head of the epididymis. It is usually regarded as a detached efferent duct.

This structure is derived from the Wolffian duct (mesonephric duct) as opposed to the appendix testis which is derived from the Müllerian duct (paramesonephric duct) remnant.

References

This article incorporates text in the public domain from page 1242 of the 20th edition of Gray's Anatomy (1918)

External links

MedEd at Loyola urology/torapx2.htm - Torsion of Appendix Epididymis
Anatomy image:7754 at the SUNY Downstate Medical Center
inguinalregion at The Anatomy Lesson by Wesley Norman (Georgetown University) (testes)

Male reproductive system

Internal

Seminal tract

Testicles	Layers Tunica vaginalis Tunica albuginea Tunica vasculosa Appendix Mediastinum Lobules Septa Leydig cells Sertoli cells Blood–testis barrier
Spermatogenesis	Spermatogonium Spermatocytogenesis Spermatocyte Spermatidogenesis Spermatid Spermiogenesis Spermatozoon
Other	Seminiferous tubules Tubuli seminiferi recti Retia testes Efferent ducts Epididymides Appendix Inferior ligaments Superior ligaments Stereocilia Paradidymides Spermatic cords Pampiniform plexus Vasa deferentia Ampullae Rectovesical pouch Ejaculatory ducts Testicular arteries Testicular veins

Accessory glands

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 Fascia Superficial Deep Tunica albuginea Septum Raphe 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 Lacuna magna External urethral orifice Lacunae of Morgagni Urethral glands
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

Penis