Multi-dimensional Human Embryo, Stage 18

Human Embryo

Carnegie Stage 18 (44 post-ovulatory days)

About Carnegie Stage 18

Most embryos at stage 18 are approximately 44 postovulatory days old and measure 13-17 mm in length. Distinguishing criteria for this stage include cervical and lumbar flexures, distinct notching in the hand plate, the first appearance of the elbow, eyelid folds may appear in more advanced specimens, and auricular hillocks begin to form distinct parts of the external ear.

Photographs

day 44 human embryo photograph

day 44 human embryo photograph

day 44 human embryo photograph

day 44 human embryo photograph

day 44 human embryo photograph

day 44 human embryo photograph

day 44 human embryo photograph

day 44 human embryo photograph

day 44 human embryo photograph

day 44 human embryo photograph

Animations

44 day human embryo - MRI animation

44 day human embryo - MRI animation

44 day human embryo - MRI animation

44 day human embryo - MRI animation

44 day human embryo - MRI animation

44 day human embryo - MRI animation

44 day human embryo - MRI animation

44 day human embryo - MRI animation

44 day human embryo - MRI animation

44 day human embryo - MRI animation

44 day human embryo - MRI animation

28-56 day human embryo time-lapse animation

44 day human embryo - MRI animation

MRI Slice Selector

Mouse: click on a line below to select a view
Finger: tap a line below with a very light touch

coronal slice image map

axial slice image map

sagittal slice image map