Kidney Flashcards

1
Q

Which develops first, reporductive or urinary system?

A

Urinary

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2
Q

Which layer does the genitourinary system(s) develop from?

A

Intermediate Mesoderm

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3
Q

Which somite levels are associate with the genitourinary system?

A

Along the paraxial mesoderm from the 7th to the 28th somite level

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4
Q

How many distinct types of kidneys does the developing fetus have?

A

Three

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5
Q

What are the three kidneys that are present

A

1st- Pronephroi
2nd- Mesonephroi
3rd- Metanephroi

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6
Q

What kind of function does the Pronephroi kidney have

A

rudimentary and very little function

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7
Q

Where does the Pronephroi kidney develop? When do they develop and when do they degenerate?

A

they develop from the 7th to 10th somite level. first to develop and degenerate around the 4th week.

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8
Q

How many pairs of tubules are associated with the head kidney?

A

4 pairs

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9
Q

Where are the mesonephroi kidneys found? How many pairs of tubules are found in them? and where does degeneration occur?

A
  • they are found between the 10th and 26th somite levels
  • 38 pairs of tubules
  • degeneration occurs from the cranial end
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10
Q

What is special about the tubules in the mesonephroi?

A

They are ā€œSā€ shaped

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11
Q

T/F: the mesonefric tubules will remain present in all adults.

A

False: They are only present in males as the genital duct system. They are not retained in females

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12
Q

When do the metanephroi kidneys develop?

A

In the 5th week

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13
Q

What are the sources that the metanephroi kidenys develop from?

A
  • Ureteric bud

- Metanephrogenic blastema

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14
Q

Where are the permanent kidneys located?

A

Just lateral to the mesonephric duct at the 26th to 28th somite level

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15
Q

What is the flat end of the bud in the metanephroi kidney?

A

Renal Pelvis

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16
Q

This is the functional part of the adult kidney

A

Internal Glomerulus

17
Q

T/F: Each adult kidney has about 2 million nephrons

A

True

18
Q

The kidneys int eh fetus can be described as this

A

Lobulated-then develop into a smooth texture

19
Q

The kidneys will start here, then migrate to the abdomen due to growth

A

In the pelvic cavity

20
Q

The urinary baldder will develop around what time in develpment

A

About 7th week

21
Q

This mesodermal mass divides the coacal masses

A

Cloacal septum

22
Q

The dorsal coalcal become what

A

Rectum

23
Q

The ventral coacal becomes this

A

Urinary bladder w/ urogenital sinus

24
Q

This structure is continuous with the bladder

A

Allantois

25
Q

The allantois becomes this in the adults

A

Median Umbilical Ligament