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What is the main factor that ensures prenatal development?

Insulin-like growth factor 1 (IGF 1) secreted by fetal tissues

What is the period from the 9th week until birth known as?

Fetal period

How is Laron dwarfism related to prenatal development?

It's a result of mutations in the growth hormone (GH) receptor

During which trimester does the greatest fetal development occur according to the text?

3rd trimester Signup and view all the answers

What is the purpose of amniocentesis during pregnancy?

To detect levels of alpha-fetoprotein (AFP) in the amniotic fluid Signup and view all the answers

What is the preferred method for fetal age determination until the end of the 1st trimester?

Crown rump length (CRL) measurement Signup and view all the answers

Which method allows detection of malformations such as neural tube defects and heart abnormalities?

Ultrasonography Signup and view all the answers

In which months of pregnancy is the growth in fetus length more evident according to the text?

3rd and 5th months Signup and view all the answers

At what stage of pregnancy is amniocentesis typically performed?

16-18 weeks counting from the last menstrual date Signup and view all the answers

If a fetus is born prematurely at the beginning of the 3rd trimester, is it likely to survive according to the text?

Yes, because all major organ systems are fully developed by then Signup and view all the answers

What does low birth weight in a baby indicate?

SGA status - lower than predetermined value for a certain gestational age Signup and view all the answers

What is the measure of fetal maturation discussed in the text?

~2500g weight at 35th week Signup and view all the answers

What is the expected date of birth in terms of weeks after the 1st day of the last menstrual cycle?

40 weeks Signup and view all the answers

What term is used for babies born before the 27th week?

Immature Signup and view all the answers

What characterizes a 'Postmature' baby?

Born after the 42nd week Signup and view all the answers

What do babies with intrauterine growth restriction (IUGR) typically experience?

Decreased fetal growth Signup and view all the answers

Which factors primarily affect babies resulting in low birth weight despite normal length and head growth?

Factors acting during the last trimester Signup and view all the answers

What term describes babies whose birth weight is 10% or less compared to their gestational age?

'SGA-IUGR' babies Signup and view all the answers

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