Embrology And Fetal Screening

Question 1

Stage 1 of blastocyst development

Answer 1

Cell division asymmetrical

Question 2

Stage 2

Answer 2

Cell polarises and loses totipotency and begin to differentiate

Question 3

Stage 3

Answer 3

Inner cell mass - foetus
Outer cell mass - trophoblast which develops onto which placenta implants on day 6

Question 4

Formation of germ layer stage 1

Answer 4

Hypoblasr becaomes endoderm layer

Question 5

Stage 2

Answer 5

Ephiblast becomes ectodermal layer
Skin

Question 6

Stage 3

Answer 6

Mesoderm
Muscle and skeleton

Question 7

Embryonic development key stages

Answer 7

1 month - heart beats breathing GI and respiratory organs appear
2 month - endocrine glands appear face has human profile started to kick and genitalia present
3 month - eyebrow gender determine
4 moths - open eyes hair and joints form
Week 34 immune system stronger
Week 36 receive antibodies from mum

Question 8

Booking bloods

Answer 8

Group and save
Full blood count
Test for sickle cell and thalasaemia
Infectious diseases - hep b hiv syphilis

Question 9

Fetal screening

Answer 9

Downs Edward’s Patel’s rick

Question 10

Newborn

Answer 10

Spot check
Hearing test
Systemic screening
Infant check 6 - 8 weeks

Question 11

Placenta storage

Answer 11

Glucagon provides glucose

Question 12

Placenta endocrine

Answer 12

Oestrogen - enhances rna and proteins synthesis growth of uterine muscles

Question 13

Placenta respirator

Answer 13

O2 and co2 transfererred

Question 14

Placenta protection

Answer 14

Acats as a filter for most bacteria

Question 15

Placenta excretion

Answer 15

CO2 main product

Question 16

Placenta nutrient

Answer 16

Foetus receives simplified material for growth and development

Question 17

Placenta transport of substances

Answer 17

Diffusion active transport and facilitated diffusion