Wk6 Placenta Histo Flashcards

1
Q

4 components of chorionic villi:

A
  1. extraembryonic mesoderm
  2. cytotrophoblasts
  3. syncytiotrophoblasts (multinucleated)
  4. blood vessels
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2
Q

Villi with trophoblasts ONLY:

A

primary villi

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3
Q

Villi with mesodermal core?

A

secondary villi

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4
Q

Villi containing blood vessels?

A

tertiary villi

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5
Q

Full of glycogen and lipid?

A

endometrial stromal cells

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6
Q

3 placental compartments:

A
  1. decidua basalis
  2. decidua capsularis
  3. decidua parietalis
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7
Q

Adjacent to decidua basalis

2-4 tertiary villi each

A

cotyledons

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8
Q

How many umbilical arteries?

A

2

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9
Q

How many umbilical veins?

A

1

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10
Q

Which placental barrier cells disappear after twenty weeks?

A

cytotrophoblasts

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11
Q

Hormones not produced by syncytiotrophoblasts:

A

prolactin, PGs, relaxin

** produced by decidua cells

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12
Q

softens pubic symphysis prior to parturition

A

relaxin

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