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Embryo: Final > Urogenital > Flashcards

Urogenital Flashcards

1
Q

Urogenital system derives from?

A

Intermediate mesoderm

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2
Q

Urinary system derives from?

A

Intermediate mesoderm

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3
Q

Development of kidney: where is pronephros located?

A

upper cervical

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4
Q

When does pronephros start developing?

A

End of week 3

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5
Q

When does pronephros end development?

A

End of week 4

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6
Q

Where is mesonephros development located?

A

thoracic and lumbar (T1-L3)

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7
Q

When does mesonephros start developing?

A

Late in week 4

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8
Q

When does mesonephros end development?

A

End of week 8

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9
Q

Where is meTanephros development located?

A

sacral

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10
Q

When does meTanephros development begin?

A

Beginning of week 5

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11
Q

When does meTanephros development end?

A

Permanent Kidney

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12
Q

What persists from the pronephros?

A

pronephros duct

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13
Q

What happens to the pronephros duct?

A

drains into meSonephros duct

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14
Q

What is another name for the meSonephros duct?

A

2nd set of kidneys

Wolffian duct

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15
Q

What direction are the kidneys forming?

A

cranial to caudal

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16
Q

what is vestigial?

A

just there; not necessary

ie: vestigial pronephric system

17
Q

where does the mesonephric duct drain?

A

cloaca

18
Q

where does the ureteric bud derive from?

A

mesonephric duct

19
Q

what does the mesonephric duct consist of?

A
  1. glomerulus

2. excretory tubules

20
Q

What is the fate of the excretory tubules in males?

A

Continue

21
Q

What is the fate of the excretory tubules in females?

A

end however form:

  1. vestigial Garner’s duct
  2. epoophron
  3. paraophron
22
Q

What remains from the mesonephros system?

A

mesonephric duct

23
Q

What does the meTanephros develop from?

A
  1. metanephric blastema

2. ureteric bud

24
Q

What is the metanephric blastema?

A 
Excretory unit:
Nephros
Bowman's capsule
PCT
Loop of Henle
DCT
25
Q

What is the ureteric bud?

A 
Collecting system:
Ureter
renal pelvis
calix (minor and major)
collecting tube
26
Q

Do the kidneys ascend or descend?

A

Ascend

Note: gonads descend

27
Q

How does the kidney ascend?

A

Ascend:

  1. Metanephric blastema
  2. Ureters

note: mesonephros disappears EXCEPT those in close contact with the gonads

28
Q

What happens to the mesospheros as the metanephric ascends?

A

Mesonephros disappears except small portion descends with the gonads

29
Q

What structures in the urogenital system are not mesoderm?

A
  1. Cloaca - endoderm
  2. Bladder - was mesoderm becomes endoderm
  3. Accessory glands of male:
    a: prostate
    b: bulbo urethral
30
Q

What does the urorectal septum divide the cloaca into?

A
  1. urogenital sinus (ventral, anterior)

2. anal canal (dorsal, posterior)

31
Q

What layer is urorectal septum from?

A

Mesoderm

Embryo: Final (1 decks)

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