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Day 16: What Shape is an Egg?

An MRI's View

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The chick continues to grow - it looks very cramped in there now! In some views you can see the beak poking toward the air sac.

There is a lot of movement - more than yesterday. The head is moving up to 1 cm over a period of a few minutes.

MRI: Front views.

Here are some front views. Positions (offset) are indicated:

mri86.gif: offset-4mm mri88.gif: offset-2mm
Frame 86: front - 4mm.
Visible features: brain, eyes, beak, air cell, body, and the heart(?).
Frame 88: front - 2mm.
Visible features: eye, brain, beak, wing or leg(?), body & organs, neck & shoulders.


MRI: Side views.

Here is a side view. Positions (offset) are indicated:

mri60.gif: offset+4mm

Frame 60: side - +4mm
In this image you can see a spot between and below the eyes. This is probably an air passage - either the mouth or a nasal or sinus passage. It is dark because there is no longer any fluid in it - the chick is breathing air from the air cell! Other visible features: brain, neck, air cell, and sinus(?).


Comments on these images were written by Carl Gregory. Thanks Carl!

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