Urinary system embryology Flashcards

1
Q

What germ layer gives rise to the urinary system?

A

Intermediate mesoderm

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2
Q

What region of the intermediate mesoderm gives rise to the urinary system?

A

Urogenital ridge

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3
Q

What are the 3 systems that form the kidney?

A

Prosenephros, mesenephros, metanephros

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4
Q

In which week does the prosenephros form?

A

4th week

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5
Q

What does the prosenephros form?

A

Nothing- regresses completely by the end of week 4

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6
Q

What is the role of the mesonephros?

A

Primary excretory system in the embryo up to 2 months

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7
Q

What forms the definate kidney?

A

Metanephros

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8
Q

At what week does the metanephros become functional?

A

12th week

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9
Q

What are the three parts of the urogenital sinus?

A

The upper part
The pelvic part
The phallic/caudal part

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10
Q

What does the upper part of the urogenital sinus form?

A

The bladder

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11
Q

What does the pelvic part of the urogenital sinus form?

A

The urethra, some of the female reproductive tract, and the prostatic and membranous urethra in males

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12
Q

What does the phallic/caudal part of the urogenital sinus form?

A

Part of the female reproductive tract and the spongy urethra in males

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13
Q

Where does the prosenephros develop?

A

The cervical region

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14
Q

Where does the mesenephros develop?

A

The thoracic and lumbar region

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15
Q

Where does the metenephros develop?

A

The pelvic region

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16
Q

What forces the kidneys to move up the abdominal wall?

A

Growth of abdomen below the kidneys