MEDICAL FACTS AND MCQ'S: Milestones of Prenatal development

1^st week of gestation : fertilization and implantation , beginning of embryonic period.

2^nd week of gestation : endoderm and ectoderm appear ( bilaminar embryo ).

3^rd week of gestation : first missed menstrual period, mesoderm appears ( trilaminar embryo ), somites begin to form.

4^th week of gestation : neural folds fuse, folding of embryo into human like shape, arm and leg buds appear , crown-rump length is 4 to 5 mm .

5^th week of gestation : lens placodes,primitive mouth,digital rays on hands.

6^th week of gestation : primitive nose , philtrum ,primary palate , crown-rump length 21 – 23 mm

7^th week of gestation : eyelids begin

8^th week of gestation : ovaries and testes distinguishable

9^th week of gestation : fetal period begins, crown-rump length is 5 cms, weight is 9 grams .

10^th week of gestation : external genitalia distinguishable

20^th week of gestation : usual lower limit of viability ,weight is 460 grams , length is 19 cms

28^th week of gestation : eyes open , fetus turns head down , weight is 1000 grams

38^th week of gestation : term.

Nori HospitalMarch 19, 2020 at 12:40 AM
This is absolutely awesome Blog.pediatric neurologist in vijayawadaGreat stuff, will looking forward for some more postings
best paediatric surgeon in vijayawada
pediatric hospital in vijayawada
isabellaMarch 23, 2021 at 2:12 AM
My husband was diagnosed with early onset Parkinson's disease at 57.his symptoms were shuffling of feet,slurred speech, low volume speech, degradation of hand writing, horrible driving skills, right arm held at 45 degree angle, things were tough for me, but now he finally free from the disease with the help of total cure ultimate health home, he now walks properly and all symptoms has reversed, he had trouble with balance especially at night, getting into the shower and exiting it is difficult,getting into bed is also another thing he finds impossible.we had to find a better solution for his condition which has really helped him a lot,the biggest helped we had was ultimatehealthhome they walked us through the proper steps,am highly recommended this ultimatehealthhome@gmail.com to anyone who needs help.