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OBG > The Fetus > Flashcards

The Fetus Flashcards

1
Q

Ovum

A

First 2 weeks

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2
Q

Embryos

A

From 3rd week to 10 weeks of gestation

And 8th week post conception

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3
Q

Crl

A

Up to 20th week

Of embryo: 4mm

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4
Q

Fetus

A

From 8th week post conception

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5
Q

Crown heel length

A

From end of 20th week

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6
Q

Gestational age in weeks in first trimester

A

CRL + 6.5mm

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7
Q

First heartbeats at

A

D 21

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8
Q

Notochord develops at

A

D14-D21 pc

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9
Q

Complete neural tube closure

Limb buds appear at

A

At D30

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10
Q

Recognisably human at

A

Week 6-8 post conception

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11
Q

Ext genitalia develops at

A

Week 8-12 pc

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12
Q

Skin is covered with lanugo and vernix caseosa is present

A

Week 20

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13
Q

Baby viable and testis descend to int inguinal ring

A

Week 28

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14
Q

Both testicles descend into scrotum and nails project beyond fingers tips and post fontanelle closes

A

Week 40

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15
Q

Fetus blood

A

Yolk sac till 14 day (2week)
Liver from 10 week
Near term from BM

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16
Q

Adult hb appears from

A

24 week

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17
Q

Between 5 and 8 weeks, fetal blood has hb

A

HB GOWER 1 and 2

HB PORTLAND

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18
Q

Only adult hb

A

> 6-12 months

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19
Q

Rh factor develops at

A

38 days pc

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20
Q

Life span of fetal rbcs

A

80 days

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21
Q

Leukocytes appear after

A

2 months of gestation

22
Q

Maternal igG crosses placenta from

A

12 week onwards

23
Q

Lanugo appears at

A

16th week

24
Q

Sebaceous glands

A

20th week

25
Q

Meconium appears at

A

20th week

26
Q

Breathing movements identifies at

A

11 week

27
Q

Breathing movements regular

A

At 20 weeks

28
Q

Lung surfactant

A

24 week

29
Q

Alveoli expand

A

28 week

30
Q

Glucagon

A

8th week

31
Q

Insulin

A

12 week

32
Q

Ant pituitary hormones

A

10 week

33
Q

Post pituitary hormones

A

12 week

34
Q

Thyroxine

A

11 week

35
Q

Distal parts of umbilical a become

A

Lateral umbilical ligament

36
Q

Proximal parts of umbilical a become

A

Superior vesical a

37
Q

Closure of umbilical v

A

Ligamentum teres

38
Q

Ductus venosus become

A

Ligamentum arteriosum

39
Q

Umbilical a closes within

A

2-3 months

40
Q

Ductus arteriosus become

A

Ligamentum arteriosus

41
Q

Ductus arteriosus obliterates at

A

1-3 months

42
Q

Closure of Foramen ovale

A

Within 1 yr

43
Q

Distal parts of umbilical a become

A

Lateral umbilical ligament

44
Q

Proximal parts of umbilical a become

A

Superior vesical a

45
Q

Closure of umbilical v

A

Ligamentum teres

46
Q

Ductus venosus become

A

Ligamentum arteriosum

47
Q

Umbilical a closes within

A

2-3 months

48
Q

Ductus arteriosus become

A

Ligamentum arteriosus

49
Q

Ductus arteriosus obliterates at

A

1-3 months

50
Q

Closure of Foramen ovale

A

Within 1 yr

OBG (6 decks)

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