QuestionSBA
QuestionChoice
These are located within the testes and are a location for the creation of spermatozoa. The average length of a seminiferous tubule is 140mm.
10014316
d
Seminiferous tubule
QuestionChoice
The ureter not demonstrated here, is approx. 20-30cm in length in an adult human.
10014317
e
Ureter
QuestionChoice
The epididymis is a tubular structure attached to the posterior aspect of the testes. It is a single narrow tightly coiled tube that may range between 6-7 meters in length in adult humans. It connects the testicle to the vas deferens.
10014313
a
Epididymis
QuestionChoice
This is a potential embryological remnant of the mesonephric duct found within the development of the female reproductive organs.
10014315
c
Gartner’s duct
QuestionChoice
This is a partially coiled tubular structure exiting the abdominal cavity via the inguinal canal. It measures approx. 30-35cm in length.
10014314
b
Vas deferens
Concept
Chapter
## Summary

The **testes** are found in the **scrotum**. The **epididymis** is located on the **posterolateral testicular wall**. The testes are held inferiorly to the abdomen via the spermatic cord. In **embryonic life** the testes are found on the posterior abdominal wall, but during development they descend to the scrotum.

## Anatomy

The testes **contain seminiferous tubules** that are lined by **Sertoli cells **that are involved in the reproductive functioning of males. Within the scrotum the testes are protected by the **tunica vaginalis**. The tunica vaginalis is enclosed by the fibrous **tunica albuginea**.

The **epididymis** is an important connection of the testes that transports sperm from the testes to the prostatic urethra for ejaculation.

The **cremaster** muscle arises from the internal oblique and inserts in the tunica vaginalis.

Its action is movement (raising and lowering) of the scrotum.

It is supplied by the **cremasteric artery**, and innervated by the **genital branch of the genitofemoral nerve (L1,L2)**. The testes also receive blood from the testicular arteries. Their venous drainage is via the pampiniform plexus of the scrotum that course around the testicular artery.

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## Clinical points

- Abnormal amounts of fluid can accumilate betwen the layers of the tunica vaginalis. This is called a hydrocele.
- Twisting of the spermatic cord can lead to compromise of the blood supply to the testis. This is called testicular torsion and it is a urological emergency.
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Inguinal Hernia Labels- updated.jpg
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236
Abdominal anatomy
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testes2.gif
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Testes
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Pelvic Anatomy
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237
Pelvic Anatomy
Identify the annotated structure.

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a