Penis

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The penis is there’organ of copulation and urination in’man. It is attached to the pubic symphysis, hanging in front of the stock exchanges’idle state. It consists of erectile formations surrounded by’a common skin envelope, the sheath of the penis.

DIMENSIONS : On average (+++), according to’state of flaccidity or’erection,

  • Resting, has a length of 10 at 12 cm and the circumference of 8 at 9 cm.
  • Erect, the pass length 16 at 18 cm and its circumference went 12 cm.

1) Erectile BODIES :

2 cavernosa and 1 spongy body formed by areolar tissue which, when’he fills with blood, train l’erection.

2 cavernosa :

  • lateral, peers and symmetrical
  • slicked back against the branches ischio,
  • covered by the erector muscles that attach the,
  • d’first separated at their origin, they join to form a ventral gutter where the spongy body is housed

1 spongy body :

  • median
  • having at its rear portion a bulged portion clavate, the bulb
  • surrounded by its original muscle strap muscle bulbo- spongy
  • then sheathing’anterior urethra
  • ending forming the glans


  • The acorn is separated from the body of the penis by a groove, the coronal sulcus or balanopreputial which forms, all around the glans, a gutter interrupted at the middle portion of the lower face by a fold of skin, the brake. The coronal groove contains sebaceous glands whose secretion constitutes the smegma which can s’accumulate in the balano-preputial groove (lack of’hygiene, premarital adhesions). The envelopes of the penis form a cylindrical fold around the glans, the foreskin, which has sleeve around the glans (c’is the foreskin which is completely cut off when’circumcision.
dorsal view

2) THE ENVELOPE OF THE PENIS :

  • a dense tunica albuginea surrounding each of erectile bodies
  • the penis fascia that surrounds a large cell space which explains the possibilities of « slip » sheath on erectile formations.
  • dartos
  • skin or sheath of the penis.

3) VASCULARISATION :

1- arteries :

  • deep, all from’Pudendale artery (shameful) internal, branch of the’internal iliac which gives the cavernous arteries, l’bulbo-urétrale artère, dorsal penile arteries.
  • superficial, from the’Pudendale artery (shameful) external, branch of the femoral artery, for the sheath of the penis

2- veins :

  • the deep dorsal vein of the penis, drains erection training, then flow into pre plexus and bladder side finally in the iliac veins
  • the superficial dorsal vein of the penis, for the sheath, will drain into the great saphenous vein.

3- lymphatic :

Inguinal nodes and external iliac

4- nerves :

  • from the sympathetic system, c’ie hypogastric plexus, basically supports’cavernous artery. C’are they who make it possible’erection.
  • the central nervous system : these are internal pudendal nerve branches, from the sacral plexus

4) MALFORMATIONS :

  • Hypospadias

– prior (balanique or coronal)
– way
– posterior (vulviforme) +++ (sexual ambiguity)

  • Epispadias
  • Phimosis : plasty or circumcision
  • Adhesions balano-foreskin: smegma
  • Shortness of brake rod : painful ulcerative and rupture during the first intercourse.
Side view

Course of Dr Dous Said – Faculty of Constantine