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EQUINOCTIAL TECHNOLOGICAL UNIVERSITY
English
the urethra
Urethra
Andrés Becerra
• The urethra transports urine from the
bladder to the outside of the body.
• In anatomy the urethra is a tuve thet
connects the urinary bladder to the
urinarimetus for the removal of fluids
from th...
• The urethra is divided into four parts in
men named after the location:Region Description Epithelium
Pre-prostatic ureth...
The urethra in an adult measures 16 cm
It is divided in 3 parts:
• Prostatic urethra measures 3cm
• Membranous urethra mea...
In the interval
between
micturition, the
walls they are
applied against
each other
Giving the conduit form of vertical
ind...
There are 3 dilatation in the urethra
• Prostatic
Urethra
• Bulbar Urethra
• Navicular
Urethra
The urethra is formed by three robes
they are:
• Mucous membrane
• Vascular
• Muscular
Mucous membrane
•Glands arranged in clusters
• The glands secrete mucus.
•The glands are called
urethral glands.
Vascular
•Level thin prostatic urethra
•Thick to form the spongy
body
•Stretch dug by venous
vascular gaps
Muscular
•Smooth muscle.
•Deep longitudinal fibers.
• Level thick membranous
urethra.
• Delgado level of the
prostatic ure...
URETHRA SPHINCTER
Function
Control the flow of urine in the
bladder through the urethra.
The internal sphincter
muscle
The external sphincter
muscle
Located Located
At the bladder's
inferior end.
The urethra's
p...
ARTERIES AND NERVES
OF URETHRA
Vascularization and innervation of urethra
ARTERIES
prostatic urethra
prostatic urethra
Arterial branches of
the prostate
...
NERVES
The posterior urethral
posterior urethral
receives
nerves of
inferior
hypogastric
plexus
The anterior urethral
rece...
The female urethra
The urethra
extends from the
neck of the
bladder to the
vulva.
It is exclusively
urinary
Since the bladder
neck is directed
downward and
forward.
It is three
to four
centimeters
Has a uniform
diameter, its origi...
Anatomical constitution
MUCOSA: The mucous is
thin and tough, has
longitudinal folds. This is
attached below the vulvar
mu...
Urethra
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Urethra

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Anatomical description of the urethra

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Urethra

  1. 1. EQUINOCTIAL TECHNOLOGICAL UNIVERSITY English the urethra
  2. 2. Urethra Andrés Becerra
  3. 3. • The urethra transports urine from the bladder to the outside of the body.
  4. 4. • In anatomy the urethra is a tuve thet connects the urinary bladder to the urinarimetus for the removal of fluids from the body • The urethra provides an exit for urine as well semen during ejaculation
  5. 5. • The urethra is divided into four parts in men named after the location:Region Description Epithelium Pre-prostatic urethra Is the intramural part of urethra and varies between 0,5 and 1,5 cm in length depending on the fullness of the bladder Transitional Prostatic urethra Crosses through prostate gland, they are several openings: Trnasitional Membranous urethra A small portion (1 or 2 cm) passing through the external urethral sphincter Pseudostratified colummnar Spongy urethra Runs along the length of the penis on its ventral surface, about 15-16 cm in length and travels through the corpus spongiosum Proxymally (pseudostratified columnar) Distally (stratified squamous)
  6. 6. The urethra in an adult measures 16 cm It is divided in 3 parts: • Prostatic urethra measures 3cm • Membranous urethra measures 1cm • Spongy urethra measures 12 cm
  7. 7. In the interval between micturition, the walls they are applied against each other Giving the conduit form of vertical indent (Penis) Then transversal indent concave backward (prostatic)
  8. 8. There are 3 dilatation in the urethra • Prostatic Urethra • Bulbar Urethra • Navicular Urethra
  9. 9. The urethra is formed by three robes they are: • Mucous membrane • Vascular • Muscular
  10. 10. Mucous membrane •Glands arranged in clusters • The glands secrete mucus. •The glands are called urethral glands.
  11. 11. Vascular •Level thin prostatic urethra •Thick to form the spongy body •Stretch dug by venous vascular gaps
  12. 12. Muscular •Smooth muscle. •Deep longitudinal fibers. • Level thick membranous urethra. • Delgado level of the prostatic urethra.
  13. 13. URETHRA SPHINCTER
  14. 14. Function Control the flow of urine in the bladder through the urethra.
  15. 15. The internal sphincter muscle The external sphincter muscle Located Located At the bladder's inferior end. The urethra's proximal end. At the bladder's distal inferior end In females inferior to the prostat in males IS MADE OF SKELETAL MUSCLE Present an under voluntary control of the somatic nervous system.
  16. 16. ARTERIES AND NERVES OF URETHRA
  17. 17. Vascularization and innervation of urethra ARTERIES prostatic urethra prostatic urethra Arterial branches of the prostate Irrigated Irrigated Urethral artery Penis artery bulb prostatic urethra Internal pudendal artery Irrigated
  18. 18. NERVES The posterior urethral posterior urethral receives nerves of inferior hypogastric plexus The anterior urethral receives nerves of Pudendal nerve
  19. 19. The female urethra The urethra extends from the neck of the bladder to the vulva. It is exclusively urinary
  20. 20. Since the bladder neck is directed downward and forward. It is three to four centimeters Has a uniform diameter, its origin and termination are narrow. It is extensible.
  21. 21. Anatomical constitution MUCOSA: The mucous is thin and tough, has longitudinal folds. This is attached below the vulvar mucosa. MUSCULAR LAYER: The deep layer is longitudinal and the surface layer is circular. Has a striated sphincter is located at the origin of the urethra. The Striated sphincter is annular.

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