[murrie]

Eyes?

[advertising guy]

correct...eyes are life size from birth and why babies are so big eyed/...lol

[Carriage Hill]

If you look at the anteroposterior diameter of the orb (eyeball), it is:

17.5 mm at birth
20-21 mm at puberty
24 mm in the adult

So there is not much of a difference in size between the orb of a baby and that of an adult. A baby’s eyes are about 75% of what they will become as an adult. So they are technically not the same size from birth, but pretty close.

OTOH...

The spinal cord. In the human fetus, the spinal cord extends all the way down to the sacral vertebrae (the very end). As a person ages, the spinal cord shortens relative to the rest of the body so at adulthood the spinal cord only reaches down to around the level of L1 (lumbar 1).

Sources:

https://www.google.com/search?client=opera&q=organ+same+size+from+birth&sourceid=opera&ie=utf-8&oe=utf-8&channel=suggest