Mediastinum testis

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Mediastinum testis

Schematic drawing of testicle and epididymis. 1 Tunica albuginea, 2 Septula testis, 3 Lobulus testis, 4 Mediastinum testis, 5 Tubuli seminiferi contorti, 6 Tubuli seminiferi recti, 7 Rete testis, 8 Ductuli efferentes testis, 9 Ductus epididymidis, 10 initial part of deferent duct

Section of a testicle of a steer, blood vessels injected with red gelatine. 1 parenchyma, 2 mediastinum testis, 3 tunica albuginea, 4 tail of epididymis, 5 head of epididymis, 6 spermatic cord with convuluted testicular artery
Gray's	subject #258 1243
Dorlands/Elsevier	m_06/12519000

The mediastinum testis extends from the upper to near the lower extremity of the gland, and is wider above than below.

From its front and sides numerous imperfect septa (trabeculæ) are given off, which radiate toward the surface of the organ, and are attached to the tunica albuginea.

They divide the interior of the organ into a number of incomplete spaces which are somewhat cone-shaped, being broad at their bases at the surface of the gland, and becoming narrower as they converge to the mediastinum.

The mediastinum supports the vessels and duct of the testis in their passage to and from the substance of the gland.

Transverse section through the left side of the scrotum and the left testis.

Microscopic picture.

Histology at KUMC male-male09 "Mediastinum (human)"
SUNY Labs 36:st-1402 - "Inguinal Region, Scrotum and Testes: Testis"

This article was originally based on an entry from a public domain edition of Gray's Anatomy. As such, some of the information contained herein may be outdated. Please edit the article if this is the case, and feel free to remove this notice when it is no longer relevant.