agnathia


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Related to agnathia: Archaeopteris, prognathia

agnathia

 [ag-na´the-ah]
congenital absence of the lower jaw.

ag·na·thi·a

(āg-nā'thē-ă), In the diphthong gn, the g is silent only at the beginning of a word.
Congenital absence of the mandible, usually accompanied by approximation of the ears.
See also: otocephaly, synotia.
[G. a- priv. + gnathos, jaw]

agnathia

[ag·nath′ē·ə]
Etymology: Gk, a, gnathos, not jaw
a developmental defect characterized by total or partial absence of the lower jaw. Also called agnathy. Compare synotia. See also otocephaly. agnathous, adj.

agnathia

The complete or virtual absence of the mandible. All cases of agnathia that occur at birth are due to mutations, and are typically associated with holoprosencephaly (HPE), which may relate to alterations in signalling from forebrain and foregut endoderm organising centres, and subsequent first pharyngeal arch development.

ag·na·thi·a

(āg-nāth'ē-ă)
Congenital absence of the mandible, usually accompanied by approximation of the ears.
See also: otocephaly, synotia
[G. a- priv. + gnathos, jaw]

agnathia

Absence of the jaw.

ag·na·thi·a

(āg-nāth'ē-ă)
Congenital absence of the mandible, usually accompanied by approximation of the ears.
[G. a- priv. + gnathos, jaw]

agnathia (agnath´ēə),

n an absence of the mandible.

agnathia

congenital absence of the lower jaw.

inherited agnathia
a lethal recessive in sheep which are unable to graze; ventral displacement of the ears is a common accompaniment.