Fascia of Colles

The perineum. The integument and superficial layer of superficial fascia reflected (deep layer of superficial fascia labeled at center)

Median sagittal section of pelvis, showing arrangement of fasciae (Colles' fascia labeled at bottom center)

Details
Identifiers
Latin| stratum membranosum telae subcutaneae perinei
TA98| A09.5.00.007
TA2| 3691
FMA| 20419
Anatomical terminology

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The membranous layer of the superficial fascia of the perineum (Colles' fascia) is the deeper layer (membranous layer) of the superficial perineal fascia. It is thin, aponeurotic in structure, and of considerable strength, serving to bind down the muscles of the root of the penis. Colles' fascia emerges from the perineal membrane, which divides the base of the penis from the prostate. Colles' fascia emerges from the inferior side of the perineal membrane and continues along the ventral (inferior) penis without covering the scrotum. It separates the skin and subcutaneous fat from the superficial perineal pouch.

## Relations

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In front, it is continuous with the dartos fascia of the penis and Scarpa's fascia upon the anterior wall of the abdomen;

On either side it is firmly attached to the margins of the rami of the pubis and ischium, lateral to the crus penis and as far back as the tuberosity of the ischium.

Posteriorly, it curves around the superficial transverse perineal muscle to join the lower margin of the inferior fascia of the urogenital diaphragm.

In the middle line, it is connected with the superficial fascia and with the median septum of the bulbospongiosus muscle.

This fascia not only covers the muscles in this region, but at its back part sends upward a vertical septum from its deep surface, which separates the posterior portion of the subjacent space into two.

## Additional images

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* The superficial branches of the internal pudendal artery.

## References

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This article incorporates text in the public domain from page 426 of the 20th edition of Gray's Anatomy (1918)

## External links

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* synd/2155 at Who Named It?
* perineum at The Anatomy Lesson by Wesley Norman (Georgetown University) (maleugtriangle1, maleugtrianglesection)
* Anatomy photo:35:03-0100 at the SUNY Downstate Medical Center - "Anterior Abdominal Wall: Layers of the Superficial Fascia"

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Muscles of perineum

Perineum|

| Anal triangle|

| Sphincter ani|

* External
* Internal

|

* Ischioanal fossa
* Pudendal canal

Middle|

* Perineal body

Urogenital triangle|

| Superficial perineal pouch|

* Superficial transverse perineal
* Bulbospongiosus
* Ischiocavernosus

|

Deep perineal pouch|

* Deep transverse perineal
* Urethral sphincters

Fascia|

| Superficial perineal fascia|

* Colles' fascia
* (in scrotum and penis: Dartos fascia)

|

Deep perineal fascia|

* Deep perineal fascia / superficial investing fascia (Gallaudet's)
* (in penis: Deep fascia of the penis (Buck's))

Urogenital diaphragm|

* Inferior fascia (Perineal membrane)
* Superior fascia

Pelvic diaphragm|

* Inferior fascia
* Superior fascia

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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
* Testicular arteries
* Testicular veins

Accessory glands|

* Seminal vesicles
* Excretory duct
* Prostate
* Urethral crest
* Seminal colliculus
* Ejaculatory ducts
* Sinus
* Ducts
* Utricle
* Bulbourethral 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

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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

Portal:

* Anatomy

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* Terminologia Anatomica

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