alar plate

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alar plate

In the embryo, the upper (dorsal) half of the neural tube (above the sulcus limitans).
Synonym: alar lamina of neural tube
See also: plate


1. pertaining to or like a wing.
2. pertaining to the axilla.

alar cartilage
a nasal cartilage which supports the rim of the nostril of some animals such as the horse.
alar fold
extends from the nostril to the ventral nasal concha. It forms the medial and ventral walls of the false nostril in the horse.
alar foramen
a third foramen which perforates the wing of the atlas in some animal species.
alar plate
dorsal bulge of the embryonic neural tube, destined to develop into the dorsal horn of the spinal cord.
rostral alar fold
one of a group of foramina in the caudal part of the orbit.