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Reproduction > Pregnancy 2 > Flashcards

Pregnancy 2 Flashcards

1
Q

After how many days foes the blastocyst attach to the uterus?

A

5-8 days

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2
Q

After how many days is the blastocyst completely buried in uterine lining?

A

12 days

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3
Q

What do trophoblastic cells differentiate in to?

A

Syncytiotrophoblasts

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4
Q

What is the function of syncytiotrophoblasts?

A

Break down capillaries to form cavities full of maternal blood

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5
Q

By what gestation is the placenta and fetal heart functional?

A

Week 5

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6
Q

What is the function of HCG?

A

Signals to the corpus luteum to continue producing progesterone

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7
Q

What are the 3 features of fetal Hb?

A

Increased ability to carry O2
Higher concentration than in adults
Can carry more O2 in low CO2

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8
Q

Function of human chorionic somatomammotropin?

A

Growth hormone effects

Decreased insulin sensitivity in mothers

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9
Q

Function of oestrogen in pregnancy?

A

Enlargement of uterus
Breast development
Relaxation of ligaments

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10
Q

What happens to CO in pregnancy?

A

Increases by 30-50% in weeks 6 - 24

Decreases in last 8 weeks

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11
Q

What happens to heart rate in pregnancy?

A

Increases by up to 90BPM

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12
Q

What happens to plasma volume in pregnancy?

A

Increases by 50% - proportionally with cardiac output

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13
Q

What happens to erythropoiesis in pregnancy?

A

Increases by 25%

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14
Q

What happens to Hb in pregnancy?

A

Decreases - by dilution

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15
Q

What happens to iron requirement during pregnancy?

A

Increases significantly

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16
Q

Why does lung function change in pregnancy?

A

Due to progesterone

And due to enlarging uterus

17
Q

What happens to CO2 levels?

A

Decreases

18
Q

What happens to respiratory rate in pregnancy?

A

Increases

19
Q

What happens to tidal and minute volume in pregnancy?

A

Increases by 50%

20
Q

What happens to vital capacity in pregnancy?

A

Nothing

21
Q

What happens to pO2 in pregnancy?

A

Nothing

22
Q

What happens to GFR in pregnancy?

A

Increases by 30-50%

23
Q

What happens to urine formation in pregnancy?

A

Slight increase

24
Q

What is the average maternal weight gain in pregnancy?

A

24lbs

25
Q

How many extra calories should a pregnancy woman consume?

A

250-300/day

26
Q

What is the function of prostaglandins in late pregnancy?

A

Stimulates the uterus to make more vigorous contractions

27
Q

What happens to oestrogen and progesterone after birth?

A

Sudden drop - because they inhibit lactation

Reproduction (7 decks)

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