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Mediastinum testis

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Title: Mediastinum testis  
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Subject: Lobules of testis, Tunica albuginea of testis, Rete testis, Tubuli seminiferi recti, Testicle
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Mediastinum testis

Mediastinum testis
A diagram of the major components of an adult human testicle, including the following numbered items: 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, 9a. Head of epididymis, 9b. Body of epididymis, 9.c Tail of epididymis,10. Vas deferens, 11a. Tunica vaginalis (parietal lamina), 11b. Tunica vaginalis (visceral lamina), and 12. Cavity of tunica vaginalis.
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 convoluted testicular artery
Dorlands
/Elsevier
m_06/12519000
Anatomical terminology

The mediastinum testis is a network of fibrous connective tissue that extends from the top to near the bottom of the testis. It is wider above than below.

Numerous imperfect septa are given off from its front and sides, which radiate toward the surface of the testes and are attached to the tunica albuginea. These divide the interior of the testes into a number of incomplete spaces called lobules. These 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 rete testis and blood vessels of the testis in their passage to and from the substance of the gland.

Additional images

References

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

External links

  • Histology at KUMC male-male09 "Mediastinum (human)"
  • Anatomy photo:36:st-1402 at the SUNY Downstate Medical Center - "Inguinal Region, Scrotum and Testes: Testis"
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