nasal pits

na·sal pits

the paired depressions formed when the nasal placodes come to lie below the general external contour of the developing face as a result of the rapid growth of the adjacent nasal elevations; the pits are the primordia of the rostral portions of the nasal chambers.
Synonym(s): olfactory pits

na·sal pits

(nā'zăl pits)
The paired depressions formed when the nasal placodes come to lie below the general external contour of the developing face as a result of the rapid growth of the adjacent nasal elevations; the pits are the primordia of the rostral portions of the nasal chambers.

na·sal pits

(nā'zăl pits)
Paired depressions formed when nasal placodes come to lie below general external contour of developing face as a result of the rapid growth of the adjacent nasal elevations.
References in periodicals archive ?
They subsequently invaginate centrally to become the nasal pits by the fifth week.