Uretheral and penile diseases

lecture name: Urethra and peniile diseases.
By Dr.Salam almosawi (F.I.B.M.S)
The male urethera:
Anatomy:
The male urethra is about 20 cm. in length and classify into 2 parts by the
urogenital diaphragm these are :
A)Posterior urethera : extend from the internal uretheral meatus to the inferior
layer of the urogenital diaphragm and farther classified into :
1.Prostatic urethera: about 4 cm. in length and surround by the tissue of the
prostate and has transitional urothelium.
2.Membranous urethera: about 1-2 cm. in length ,surrounded by the external
urethral sphincter and also had transitional urothelium.
B)Anterior urethra: extend from the inferior layer of the urogenital diaphragm to
the external uretheral meatus.it is farther classified into:
1.Bulbous urethra: surrounded by the bulbs of the penis and has transitional
urothelium.
2.Penile urethra: surrounded by the erectile corporal tissues and also had
transitional urothelium.
3.Glandular urethra: surrounded by the glans penis and had squamous epithelium