The Fetus Flashcards by Madiha k

Q

Ovum

A

First 2 weeks

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Q

Embryos

A

From 3rd week to 10 weeks of gestation

And 8th week post conception

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Q

Crl

A

Up to 20th week

Of embryo: 4mm

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Q

Fetus

A

From 8th week post conception

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Q

Crown heel length

A

From end of 20th week

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Q

Gestational age in weeks in first trimester

A

CRL + 6.5mm

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Q

First heartbeats at

A

D 21

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Q

Notochord develops at

A

D14-D21 pc

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Q

Complete neural tube closure

Limb buds appear at

A

At D30

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Q

Recognisably human at

A

Week 6-8 post conception

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Q

Ext genitalia develops at

A

Week 8-12 pc

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Q

Skin is covered with lanugo and vernix caseosa is present

A

Week 20

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Q

Baby viable and testis descend to int inguinal ring

A

Week 28

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Q

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

A

Week 40

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Q

Fetus blood

A

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

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Q

Adult hb appears from

A

24 week

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Q

Between 5 and 8 weeks, fetal blood has hb

A

HB GOWER 1 and 2

HB PORTLAND

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Q

Only adult hb

A

> 6-12 months

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Q

Rh factor develops at

A

38 days pc

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Q

Life span of fetal rbcs

A

80 days

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Q

Leukocytes appear after

Study These Flashcards

A

2 months of gestation

Q

Maternal igG crosses placenta from

Study These Flashcards

A

12 week onwards

Q

Lanugo appears at

Study These Flashcards

A

16th week

Q

Sebaceous glands

Study These Flashcards

A

20th week

Meconium appears at

20th week

Breathing movements identifies at

11 week

Breathing movements regular

At 20 weeks

Lung surfactant

24 week

Alveoli expand

28 week

Glucagon

8th week

Insulin

12 week

Ant pituitary hormones

10 week

Post pituitary hormones

12 week

Thyroxine

11 week

Distal parts of umbilical a become

Lateral umbilical ligament

Proximal parts of umbilical a become

Superior vesical a

Closure of umbilical v

Ligamentum teres

Ductus venosus become

Ligamentum arteriosum

Umbilical a closes within

2-3 months

Ductus arteriosus become

Ligamentum arteriosus

Ductus arteriosus obliterates at

1-3 months

Closure of Foramen ovale

Within 1 yr

Distal parts of umbilical a become

Lateral umbilical ligament

Proximal parts of umbilical a become

Superior vesical a

Closure of umbilical v

Ligamentum teres

Ductus venosus become

Ligamentum arteriosum

Umbilical a closes within

2-3 months

Ductus arteriosus become

Ligamentum arteriosus

Ductus arteriosus obliterates at

1-3 months

Closure of Foramen ovale

Within 1 yr