Scribd
Upload
203 views30 pages

Ureter

The ureters are narrow muscular tubes that convey urine from the kidneys to the urinary bladder. Each ureter is approximately 25cm long and 3mm in diameter. The ureters have 3 layers - an outer fibrous coat, middle muscular coat, and inner mucous membrane. They course from the renal pelvis down through the abdomen and pelvis, with various anatomical relations along the way. The ureters have sphincter-like contractions at several points to aid in urine transport. They are supplied by blood vessels and nerves and develop from the intermediate mesoderm. Abnormalities can include double pelvises or bifid ureters. Ureteric stones commonly cause renal colic

Uploaded by

Puneet Singh
Copyright
© © All Rights Reserved
We take content rights seriously. If you suspect this is your content, claim it here.
Available Formats
Download as PPT, PDF, TXT or read online on Scribd
203 views30 pages

Ureter

The ureters are narrow muscular tubes that convey urine from the kidneys to the urinary bladder. Each ureter is approximately 25cm long and 3mm in diameter. The ureters have 3 layers - an outer fibrous coat, middle muscular coat, and inner mucous membrane. They course from the renal pelvis down through the abdomen and pelvis, with various anatomical relations along the way. The ureters have sphincter-like contractions at several points to aid in urine transport. They are supplied by blood vessels and nerves and develop from the intermediate mesoderm. Abnormalities can include double pelvises or bifid ureters. Ureteric stones commonly cause renal colic

Uploaded by

Puneet Singh
Copyright
© © All Rights Reserved
We take content rights seriously. If you suspect this is your content, claim it here.
Available Formats
Download as PPT, PDF, TXT or read online on Scribd

URETER

URETERS
DEFINITION:
A pair of narrow ,
thick walled, muscular
tubes.
They convey urine
from the kidneys to the
urinary bladder.

DIMENSIONS:
Length:25cm
Diameter:3mm
COURSE OF THE URETERS
• Divided into 3 parts

Renal pelvis

Abdominal part

Pelvic part
RENAL PELVIS

MINOR CALYX

MAJOR CALYX

RENAL PELVIS
RELATIONS OF THE
ABDOMINAL PART OF URETER

POSTERIOR
RELATIONS
(On both the sides)

Psoas major
Genitofemoral nerve
Tips of the transverse
process of all the lumbar
ANTERIOR RELATIONS
RIGHT SIDE LEFT SIDE
• Covered by parietal • Covered by parietal
peritoneum peritoneum
• Rt. Gonadal vessels • Lt. Gonadal vessels
• Rt. Colic & ileocolic • Lt. colic & sigmoidal
branches of superior branches of inferior
mesentric artery mesentric artery
• Root of mesentry • Sigmoid mesocolon
• Coils of small • Sigmoid colon
intestine
PELVIC PART OF URETER
• Further divided into 3 parts according to its course

• 1st part (Vertical part)

• 2nd part (Oblique part)

• 3rd part (Intravesical part)


Relations of vertical part
Relations of oblique part
(in females)
• In females
In male
Intravesical part
• Obliquely placed, act as a valve
• Prevents regurgitation of urine
• Ureteric openings lie 5 cms apart in a
distended bladder and only 2.5 cms in a
empty bladder
CONTRICTIONS OF URETER
• Pelvi-uretric junction

• Pelvic brim

• Point of entry into


bladder wall
STRUCTURE OF URETER
• Consists of 3 coats from outside inwards:
– Fibrous
– Muscular
– Mucous
STRUCTURE OF URETER
FIBROUS COAT
• Composed of:
– Mainly of elastic fibres
– Continous with renal capsule
MUSCULAR COAT
• In upper 2/3rd – 2 layers
– Outer circular
– Inner longitudinal

• In lower 1/3rd – 3 layers


– Outer longitudinal
– Middle circular
– Inner longitudinal
MUCOUS MEMBRANE
• Lined by
– Transitional epithelium
Histological structure
Blood supply
• 3 sets of long arteries supplies it
a) Upper part- mainly from renal, few branches
from gonadal or colic vessels
b) Middle part- mainly from abdominal aorta
partly from gonadal or iliac vessels
c) Pelvic part- branches from vesical, middle
rectal or uterine vessels
d) Arteries closely attached to peritoneum- forms
longitudinal anastomosing plexus on the
surface of ureter
BLOOD SUPPLY OF URETER
NERVE SUPPLY
• Sympathetic- T10- L1
• Parasympathetic S2- S4
• Nerves reach via renal, aortic &
hypogastric plexus
DEVELOPMENT

• The urinary and genital systems have


a common developmental
background and both are developed
from the intermediate mesoderm.
Development of ureter
• Ureter develops from ureteric bud of
mesonephric duct of intermediate
mesoderm.
Anomalies of ureter
• Double pelvis
• Bifid ureter
• Ectopic ureteric orifice
APPLIED ASPECTS
• Bifid renal pelvis

• Duplication of ureter

• Ureteric calculus
• Renal colic- etiology- ureteric stone or
calculus
• Presenting symptoms- loin pain, radiating
down to the groin, scrotum, labium majus
& to the inner side of the thigh due to
spasm of the ureter
• Ureteric stone- liable to get impacted at
any one of the sites of normal ureteric
constrictions
THANK YOU

You might also like