Crus of penis

Internal base of the human biological male sex organ

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Crus of penis

The constituent cavernous cylinders of the penis. (Crus labeled at bottom left.)

Vertical section of bladder, penis, and urethra. (Crus penis labeled at bottom center.)

Details
Lymph| superficial inguinal lymph nodes
Identifiers
Latin| crus penis
TA98| A09.4.01.004
TA2| 3665
FMA| 18248
Anatomical terminology

[edit on Wikidata]

The two crura of penis (one crus on each side) constitute the root of penis along with the bulb of penis. The two crura flank the bulb - one to each side of the bulb. Each crus is attached at the angle between the perineal membrane and ischiopubic ramus. The deep artery of the penis enters the anterior portion of the crus. Distally, each crus transitions into either corpus spongiosum of the body of penis.[1]

## Anatomy[edit]

Each crus represents the tapering, posterior fourth of each corpora cavernosa penis; the two corpora cavernosa are situated alongside each other along the length of the body of penis while the two crura diverge laterally in the root of penis before attaching firmly onto either ischial ramus at their proximal end.[citation needed]

Each crus begins proximally as a blunt-pointed process in anterior to the tuberosity of the ischium, along the perineal surface of the conjoined (ischiopubic) ramus.[citation needed]

Just proximal to the convergence of the two crura, they come into contact with the bulb of (corpus cavernosum of) penis.[citation needed]

## Additional images[edit]

* Male urethra.

## See also[edit]

* Crus of clitoris

## References[edit]

1. ^ Sinnatamby, Chummy S. (2011). Last's Anatomy (12th ed.). p. 319\. ISBN 978-0-7295-3752-0.

* v
* t
* e

Male reproductive system

Internal|

| Seminal tract|

| Testicles|

* Layers
* Tunica vaginalis
* Tunica albuginea
* Tunica vasculosa
* Appendix
* Mediastinum
* Lobules
* Septa
* Leydig cell
* Sertoli cell
* Blood–testis barrier

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Spermatogenesis|

* Spermatogonium
* Spermatocytogenesis
* Spermatocyte
* Spermatidogenesis
* Spermatid
* Spermiogenesis
* Spermatozoon

Other|

* Seminiferous tubules
* Tubuli seminiferi recti
* Rete testis
* Efferent ducts
* Epididymis
* Appendix
* Inferior ligament
* Superior ligament
* Stereocilia
* Paradidymis
* Spermatic cord
* Vas deferens
* Ampulla
* Ejaculatory duct

Accessory glands|

* Seminal vesicles
* Excretory duct
* Prostate
* Urethral crest
* Seminal colliculus
* Ejaculatory duct
* Sinus
* Ducts
* Utricle
* Evolution in monotremes
* Bulbourethral glands

External|

| Penis|

* Root
* Crus
* Bulb
* Fundiform ligament
* Suspensory ligament
* Body
* Corpus cavernosum
* Trabeculae of corpora cavernosa
* Corpus spongiosum
* Trabeculae of corpus spongiosum
* Glans
* Foreskin
* Frenulum
* Corona
* Septum glandis
* Fascia
* Superficial
* Deep
* Tunica albuginea
* Septum of the penis
* Penile raphe
* Internal urethral orifice
* Urethra
* Pre-prostatic
* Prostatic
* Intermediate
* Spongy
* Navicular fossa
* Lacuna magna
* External urethral orifice
* Lacunae of Morgagni
* Urethral gland

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Scrotum|

* Layers
* Skin
* Dartos fascia
* External spermatic fascia
* Cremaster
* Cremasteric fascia
* Internal spermatic fascia
* Perineal raphe
* Scrotal septum

Portal:

* Anatomy

Authority control databases |

* Terminologia Anatomica

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This article incorporates text in the public domain from page 1248 of the 20th edition of Gray's Anatomy (1918)
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