Thespermatic cord is the cord-like structure in males formed by thevas deferens (ductus deferens) and surrounding tissue that runs from thedeep inguinal ring down to eachtesticle. Itsserosal covering, thetunica vaginalis, is an extension of theperitoneum that passes through thetransversalis fascia. Each testicle develops in the lower thoracic and upper lumbar region and migrates into the scrotum. During its descent it carries along with it the vas deferens, its vessels, nerves etc. There is one on each side.
| Spermatic cord | |
|---|---|
 The spermatic cord in theinguinal canal (label for spermatic cord in lower right) | |
| Details | |
| Artery | Testicular artery |
| Vein | Pampiniform plexus |
| Identifiers | |
| Latin | funiculus spermaticus |
| MeSH | D013085 |
| TA98 | A09.3.04.001 |
| TA2 | 3615 |
| FMA | 19937 |
| Anatomical terminology | |
Structure
editThe spermatic cord is ensheathed in three layers of tissue:
- external spermatic fascia, an extension of theinnominate fascia that overlies theaponeurosis of theexternal oblique muscle.[1]
- cremasteric muscle and fascia, formed from a continuation of theinternal oblique muscle and its fascia.[1]
- internal spermatic fascia, continuous with thetransversalis fascia.[1]
The normal diameter of the spermatic cord is about 16 mm (range 11 to 22 mm).[2] It is located behind thetunica vaginalis.[3]
Contents
editBlood vessels
editNerves
edit- Nerve to cremaster (genital branch of thegenitofemoral nerve).
- Testicular nerves (sympathetic nerves).
Theilioinguinal nerve is not actually located inside the spermatic cord, but runs outside it in theinguinal canal.
Other contents
editThetunica vaginalis is located in front of the spermatic cord, outside it.[3]
Clinical significance
editThe spermatic cord is sensitive totorsion, in which the testicle rotates within its sac and blocks its own blood supply.Testicular torsion may result in irreversible damage to the testicle within hours. A collection ofserous fluid in the spermatic cord is named 'funiculocele'.
The contents of theabdominal cavity may protrude into the inguinal canal, producing anindirect inguinal hernia
Varicose veins of the spermatic cord are referred to asvaricocele. Though often asymptomatic, about one in four people with varicocele have negatively affected fertility.[4]
Additional images
edit
The leftfemoral triangle
The scrotum
The right testis, exposed by laying open thetunica vaginalis
Spermatic cord
Spermatic cord
Superficial veins oflower limb. Superficial dissection. Anterior view.
References
edit- ^abcdefghiLiu, Longfei (2019). "Chapter 1 - Applied Anatomy of the Scrotum and its Contents".Scrotoscopic Surgery.Academic Press. pp. 1–8.doi:10.1016/B978-0-12-815008-5.00001-7.ISBN 978-0-12-815008-5.S2CID 81721236.
- ^Firoozabadi R, Stafford P, Routt M (2015)."Risk of Spermatic Cord Injury During Anterior Pelvic Ring and Acetabular Surgery: An Anatomical Study".Arch Bone Jt Surg.3 (4):269–73.PMC 4628634.PMID 26550592.
- ^abYin, Zhuo; Meng, Xianxi (2019)."Chapter 4 - General Techniques of Scrotoscopic Surgery".Scrotoscopic Surgery.Academic Press. pp. 23–53.doi:10.1016/B978-0-12-815008-5.00004-2.ISBN 978-0-12-815008-5.S2CID 81292862.
- ^"Learn About Varicocele Treatment".VARICOCELE HEALING.Archived from the original on 2 February 2014. Retrieved25 April 2018.
External links
edit- Cross section image: pembody/body18b—Plastination Laboratory at the Medical University of Vienna
- Cross section image: pelvis/pelvis-e12-15—Plastination Laboratory at the Medical University of Vienna
- inguinalregion at The Anatomy Lesson by Wesley Norman (Georgetown University) (spermaticcord)
