Sectioned Amniotic Egg Anatomy Model
Created today
Description
A 180 × 130 × 130 mm egg cut in half along its length. The back half holds every anatomical layer nested with about 0.4 mm gaps. The front shell half is a separate lid you lift away to see inside. Each layer prints flat on its cut face.
Layers, outside in
- Eggshell: 2.5 mm, in two halves
- Outer and inner shell membranes: 1.4 mm each
- Chorion: 1.4 mm
- Albumen: fills the space around the yolk and sac, with channels for the chalazae
- Yolk, r 28 mm, inside a 1.6 mm vitelline membrane
- Amnion: a 13 mm sphere with a 10.5 mm cavity, opening at the cut face
- Embryo: curled, with head, tail and two limb buds
- Allantois: a sac beside the amnion
- Chalazae: two twisted cords, each about 50 mm long
- Air cell: an open void at the wide (+X) end, between the shell membranes
Remix hooks
- Layer offsets (0, 2.9, 4.7, 6.5, 8.3 mm): change these to thicken or thin any membrane.
- Cut plane: moving it off y = 0 gives a wider or narrower window. A quarter-cut is also an easy variant.
- Air cell: set by the 72 mm start of its void. Move it to resize the cell.
- Not included: pins, label plates and a reference chart. Small tags or a printed key card would pair well with this model.
- Scaling: the model scales cleanly for a smaller, faster print.
Images
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