Urogenital System Embryology GBA

Question 1

What are the derivatives of Gubernaculum?

Answer 1

Male -Extra-Abdominal Tissue remnant of Testis outflow from the Body wall, Will anchor the Testis to Scrotum.
Female -Forming the Ovarian and Round Ligament

Question 2

Pronephros Derivatives

Answer 2

No Derivatives in Humans

Question 3

Result of the Incorporation of Mesonephric ducts in to the posterior wall of bladder?

Answer 3

Urinary Trigone

Question 4

Metanephros is Functional By week..

Answer 4

week 10

Low yeild but still

Question 5

Urinary Bladder Origin

Answer 5

Urogenital Sinus part of Allantois

Question 6

What do developed Sertoli cells secrete to suppress female gonad development?

Answer 6

MIF:

Mullerian- Inhibiting Factor

Question 7

Transitional Epithelium in the Ureter and Urinary Bladder Origin:

Answer 7

Ureter Transitional Epithelium - Mesoderm
Urinary Bladder Transitional Epithelium - Ectoderm
(Low yeild but still)

Question 8

Where does the Anterior Portion of the Vagina originated from?

Answer 8

Cloacal Membrane

Question 9

Mesonephros Derivatives

Answer 9

Mesonephric Duct (Wolffian)

Question 10

Metanephros Derivatives

Answer 10

Ureteric Bud and Metanephric Mesoderm

Question 11

Fate of the Mesonephric Duct (Wolffian) in Males and In Females?

Answer 11

Male Mesonephric Duct (Wolffian):
Persists, formes - Epididymis, V.Deferens, Prostate, Seminal Vesicles.
Female Mesonephric Duct (Wolffian) Degenerates - Epoophoron Remnant.

Question 12

Layers of the Testis and the corresponding Abdominal Wall Element (If exists):

Answer 12

From Inner to Outer:

1) Tunica Albuginea
2) Tunica Vaginalis - Peritoneum
3) Internal Spermatic Fascia - Transversalis F.
4) Cremasteric Muscle+Fascia - Transverse Abdominis and Internal Oblique M.
5) External Spermatic Fascia - External Oblique F.
6) Tunica Dartos
7) Skin of Scrotum

Question 13

What is the SRY Gene?

Answer 13

Sex determining Region Y protein :
Also called Testis determining factor allowing the formation of Leydig and Sertoli cells, In the absence of them Ovaries form.

Question 14

Fate of the Mesonephric Duct Excretory Tubules in Males and In Females?

Answer 14

In both Male and Female they are degenerated to allow free motion of the developing Gonad

Question 15

Fate of the Medullary Cords of Developing Gonad in Males and In Females?

Answer 15

Males - Rete testis

Females - Degenerate

Question 16

Fate of the Paramesonephric Duct (Mullerian) in Males and In Females?

Answer 16

Paramesonephric Duct (Mullerian) in Females: Posterior Vagina, Uterus, Fallopian tube 
Paramesonephric Duct (Mullerian) in Males:
Appendix Testis and Prosthetic Utricle

Question 17

Allantois Remnant

Answer 17

Urachus - Median Umbilical Fold

Question 18

Urogenital Ridge forms (Other than Nephrogenic Ridge):

Answer 18

Gonadal Ridge

Question 19

Ureteric Bud Derivatives

Answer 19

Ureteric Bud:
Ureter
Renal Pelvis
Major and Minor Calyces
Collecting Duct

Question 20

Metanephric Mesoderm Derivatives

Answer 20

Metanephric Mesoderm:
Connecting tubule
DCT + PCT
Loop of Henle
Bowman's Capsule
Renal Glomerulus

Question 21

Metanephros Movement

Answer 21

Elevation from S1-S2 to T12-L3

Question 22

Intermediate Mesoderm forms Urogenital Ridge that in turn forms Nephrogenic Ridge - Which 3 structures will be formed from it?

Answer 22

Pronephros
Mesonephros
Metanephros