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Embryology of excretory
system

By:
Dr Kushagra V Grag
Resident
Radio-Diagnosis
DEVELOPMENT OF KIDNEY &
URETER
3RD WEEK, DORSAL VIEW & T.S.
3RD WEEK (Approx 24 days),
LATERAL VIEW & T.S.
3RD WEEK (Approx 26 days),
LATERAL VIEW & T.S.
21 DAYS

25 DAYS
DEVELOPMENT OF KIDNEYS
PRONEPHROS
5TH WK
MESONEPHROS

5TH WK

5TH WK
CARNEGIE STAGE 22, Approx 54 DAYS
5TH WK
5TH WK
5TH WK
5TH – 11TH WK
CARNEGIE STAGE 17, Approx 42 DAYS
METANEPHROS

END OF 5TH WK
DEVELOPMENT OF THE RENAL
PELVIS, CALYCES & COLLECTING
TUBULES OF THE METANEPHROS

6TH WK END OF 6TH WK

7TH WK

NEWBORN
5TH WK

5TH-8TH WK
8TH WK
28TH WK FETUS
NEPHROGENESIS

8TH WK
DEVELOPMENT OF URETER
5TH WEEK

7TH WEEK

9TH WEEK
DEVELOPMENT OF METANEPHRIC
EXCRETORY UNITS
MOLECULAR REGULATION OF
KIDNEY DEVELOPMENT
ASCENT OF KIDNEYS
POSITIONAL CHANGES & RENAL
VASCULATURE

6TH -9TH
WK
ACCESSORY (SUPERNUMERARY)
RENAL ARTERIES
ACCESSORY (SUPERNUMERARY)
RENAL VEINS
CYSTIC KIDNEY DISEASE
AUTOSOMAL RECESSIVE
POLYCYSTIC KIDNEY DISEASE
MULTICYSTIC DYSPLASTIC
KIDNEY
RENAL AGENESIS
19.5 WEEKS
FETUS
ECTOPIC KIDNEYS
PELVIC KIDNEY
CROSSED RENAL ECTOPIA
HORSE SHOE KIDNEY
HORSE SHOE KIDNEY
IN A 13-WK FEMALE
FETUS
DISCOID (“PANCAKE”) KIDNEY
SUPERNUMERARY KIDNEYS
MALROTATED KIDNEY
MALROTATION, BIFID URETER,
SUPERNUMERARY KIDNEY
PARTIAL/ COMPLETE BIFID
URETER
ECTOPIC URETERIC ORIFICE
RETROCAVAL URETER
MEGALOURETER
REFERENCES

GRAY’s Anatomy, 40th Edition
The Developing Human: Clinically Oriented Embryology, By
MOORE & PERSAUD, 5th Edition
LANGMAN’s Embryology, By T.W.SADLER, 10th Edition
LAST’s Anatomy Regional & Applied, By CHUMMY S.
SINNATAMBY, 10th Edition
Clinically Oriented Anatomy, By KEITH L. MOORE, 8th Edition
Clinical Anatomy By Regions, By RICHARD S. SNELL, 8th
Edition
Development of kidney and ureter

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Development of kidney and ureter