Crr Week 1: Embryology Of The Kidneys

Front 1

The metanephric vesicles and tubulues develop into which structures?

Back 1

1. Bowman's capsule
2. Proximal convoluted tubule
3. Descending and ascending loops of Henle
4. Distal convoluted tubule

Front 2

Is the metanephric mesoderm responsible for the urine-forming or urine-collecting part of the kidney?

Back 2

Urine-forming part of the kidney

Front 3

Most of the urogenital system develops from which embryologic layer?

Back 3

Intermediate mesoderm

Front 4

The intermediate mesoderm forms which structures of the urinary system?

Back 4

1. Kidneys
2. Ureters

Front 5

Which embryologic layers form the bladder?

Back 5

Urogenital sinus:
1. Splanchnic mesoderm
2. Endoderm

Front 6

The urethra forms from which embryologic layers?

Back 6

Urogenital sinus:
1. Splanchnic mesoderm
2. Endoderm
3. Ectoderm (male)

Front 7

List the 3 sets of excretory systems in the embryo.

Back 7

1. Pronephros
2. Mesonephros
3. Metanephros

Front 8

Which set of excretory system is rudimentary and transitory?

Back 8

Pronephros

Front 9

What happens to the pronephric tubules and the pronephric duct?

Back 9

Pronephric tubules = degenerate

Pronephric duct = caudual portion contributes to mesonephric duct

Front 10

The mesonephric kidney is functional during which weeks of development?

Back 10

5 - 10th week

Front 11

The mesonephric tubules in males sometimes persist as .....

Back 11

Efferent ductules of testes

Front 12

The mesonephric duct in males persists as ....

Back 12

1. Vas deferens
2. Epididymis

Front 13

Which set of excretory systems develop into the adult functioning kidneys?

Back 13

Metanephric kidney

Front 14

When do the metanephric kidneys begin functioning?

Back 14

9th week of development.

Front 15

The metanephros consists of which 2 structures?

Back 15

1. Ureteric bud
2. Metanephric mesoderm (metanephric blastema)

Front 16

The collecting system develops from which structure?

Back 16

Ureteric bud
(metanephros)

Front 17

The ureteric bud forms which 2 structures?

Back 17

1. Ureter
2. Renal pelvis

Front 18

Branches within the metanephric mesoderm form what structures?

Back 18

1. Major and minor calyces
2. Collecting ducts

Front 19

The urine-collecting part of the kidney is formed from which part of the metanephros?

Back 19

Ureteric bud
(and branches of the metanephric mesoderm)

Front 20

Which structures induce the metanephric mesoderm to form the metanephric vesicles and tubules?

Back 20

Collecting ducts

Front 21

Where do the urine-forming and urine-collecting parts of the kidney join?

Back 21

Junction at the collecting ducts and distal convoluted tubule.
(where uretic bud and metanephric mesoderm derivatives meet).

Front 22

What does the renal corpuscle consist of?

Back 22

Bownman's capsule + Glomerulus

Front 23

What does the nephron consist of?

Back 23

1. Bowman's capsule
2. Glomerulus
3. PCT
4. Loop of Henle
5. DCT

Front 24

What does the uriniferous tubule consist of?

Back 24

Nephron + collecting duct

Front 25

The nephron is derived from which tissue?

Back 25

Metanephric mesoderm

Front 26

The collecting duct is derived from which tissue?

Back 26

Ureteric bud (metanephros)

Front 27

The ascent of the kidneys occurs during which weeks of development?

Back 27

6 - 9 weeks

Front 28

List 2 causes of renal agenesis

Back 28

1. Lack of formation of ureteric bud
2. Disrupted interaction with metanephric mesoderm

Front 29

What are the 3 regions of the urogenital sinus?

Back 29

1. Vesicle part
2. Pelvic part
3. Phallic part

Front 30

What is the fibrous remnant of the allantois?

Back 30

Urachus
(Forms the median umbilical ligament in humans)

Front 31

The trigone of the bladder is a derivative of which tissue?

Back 31

Derived from the intermediate mesoderm
(Incorporation of mesonephric duct)

Front 32

What causes a urorectal fistula?

Back 32

Failure of the anal canal to recanalize
(imperforate anus)