But, four body parts don’t grow from birth ... After that, the size of the teeth remains the same throughout life. Eye Lenses ...

[Enza3D] shows off a surprisingly compact articulated animatronic eyeball that can be intuitively controlled with a Wii nunchuk controller. The design uses 3D printed parts and some tiny servos ...

A benign tumour does not spread to other parts of the body. But a malignant tumour (cancer) can spread. The inside of the eyeball is filled with a clear jelly like substance called vitreous humour.