Cephalocaudal and proximodistal trends describe fetal and early infant development, with the head and upper body developing before the lower body. From 5 months of gestation to birth, the fetus grows outward from the body. In the first month after birth, infants gain better muscular control of their trunk and arms before their hands and fingers. It is normal for babies to lose 5-10% of their birth weight in the first couple weeks as breastfed babies are typically heavier than bottle-fed babies in the first 6 months. Myelination, the process of axons becoming insulated, begins before birth and continues after, increasing neural signal speed. A newborn's brain is 25% of its adult size

2. CephalocaudaltrendProximodistaltrend
Applies to the development of the fetus and in the first month after
birth.
Infants lean to use their upperlimbs before their lower limb.
Prenatal growth from 5 months to birth when the fetus grows
from the body onwards
First month after birth as shown in the earliermaturation of
muscular control of the trunk and arms followed by the hands and
fingers.

4. Its normalfor babiestodrop5to10% oftheir body weight
withincouple ofweeksafterbirth.
breastfeedbabiesare typicallyheavierthan bottlefedbabies
through thefirst6 months.

5. Myelination-theprocess
bywhichtheaxonswhichthe
axonsare coveredandinsulated
bylayersoffat cells,begins
prenatallyandcontinuesafter
birththisprocessincreasesthe
speedatwhichinformation
travelsthroughthenervous
system.

6. At birth thenewborn’s brain is about 25% of its adult weight.
By the 2nd birthday thebrain is about 75%.
After birth a baby’s brain produces trillions of connections
betweenneurons thanit can possibly use.

7. an American research psychologist