Penis and prepuce

PENIS AND PREPUCE

  • Bull
    • It measures about 90 cm
    • It consists of 3 parts: root, body and glans. Body forms ‘S’ shaped curve (sigmoid flexure) behind the scrotum
    • Retractor penis muscle is attached to second bend of sigmoid flexure 
    • Glans penis, the free end of the organ is pointed and twisted.
    • Penis is fibrous type
  • Stallion
    • Length is 50 cm. It undergoes 50% increase during erection. There is no sigmoid flexure
    • Erectile tissue is more, so it is vascular type
    • Base of the glans forms a prominent margin known as corona glandis
  • Dog
    • Os penis is present in glans penis. Ventrally this bone is grooved for the lodgement of the urethra. There is no sigmoid flexure
  • Cock
    • It is in the form of two raised folds on floor of proctodeum

Prepuce

  • It is a tubular structure covering the anterior part of the penis. It consists of external and internal (penile) layers
  • The internal layer is loosely attached to the body and closely attached to the glans. Preputial orifice is the opening of the prepuce
  • It is about 5 cm behind the umbilicus. Appreciate protractor and retractor prepuce muscles
  • Stallion: Prepuce is a double invagination of the skin
  • Dog : As in bull
  • Cock : Absent
Last modified: Thursday, 9 February 2012, 10:22 AM