secondary palate


Also found in: Dictionary, Thesaurus, Encyclopedia, Wikipedia.
Related to secondary palate: primary palate

palate

 [pal´at]
the roof of the mouth. The hard palate is the front portion braced by the upper jaw bones (maxillae); it has a bony framework and forms the partition between the mouth and the nose. The soft palate is the fleshy part arching downward from the hard palate to the throat; it separates the mouth and the pharynx. When a person swallows, the rear of the soft palate swings up against the back of the pharynx and blocks the passage of food and air to the nose. A fleshy lobe called the uvula hangs from the middle of the soft palate. adj., adj pal´atal.
cleft palate see cleft lip and cleft palate.
premaxillary palate (primary palate) that portion of the palate that was the median nasal process during early development.
secondary palate that portion of the palate that was the lateral nasal processes during early development.

sec·on·dar·y pal·ate

the portion of the embryonic palate, posterior to the primary palate that forms from the lateral palatine processes of the embryonic maxilla and develops into the hard and soft palates.

sec·on·dar·y pal·ate

(sek'ŏn-dar-ē pal'ăt)
Portion of embryonic palate, posterior to the primary palate that forms from lateral palatine processes of embryonic maxilla and develops into hard and soft palates.

sec·on·dar·y pal·ate

(sek'ŏn-dar-ē pal'ăt)
Portion of embryonic palate, posterior to primary palate that forms from lateral palatine processes of the embryonic maxilla.
References in periodicals archive ?
Ocurrance and temporal variation in matrix metalloproteinases and their inhibitors during murine secondary palate morphogenesis.
Temporospatial distribution of matrix metalloproteinase and tissue inhibitors of the matrix metalloproteinases during murine secondary palate morphogenesis.
Development of secondary palate requires strict regulation of ECM remodeling: sequential distribution of RECK, MMP-2, MMP-3, and MMP-9.
Other events in the facial region involved in the shifts in timing that differentiate taxa include the appearance of tooth buds, the differentiation of ear ossicles, the closure of the secondary palate, the differentiation of basicranial cartilage and several aspects of muscle development.
These include the first ossification of a variety of cranial bones, the appearance of tooth buds, the differentiation of the ear ossicles, the closure of the secondary palate, and steps in the maturation of cranial muscles (Table 4).
The marsupial neonate must at a minimum have a closed secondary palate (providing support to and separation of the oral and respiratory pathways), sufficient ossification and chondrification (to provide cranial rigidity and support muscle attachment), functional oral musculature (primarily tongue and oral-pharyngeal muscles), and a means to support the lower jaw (because at birth there is no dentary-squamosal contact).
CONCLUSIONS: TCDD-induced alteration of secondary palate development in the mouse appears to depend on atRA signaling, which controls AHR expression.
Their dentition became increasingly complex, and both therocephalians and cynodonts eventually developed a complete bony secondary palate (Kemp 1982).
As a result of this migration, which apparently preceded the development of the secondary palate (fig.
Many of the mammallike features found in both groups, such as the secondary palate and the differentiated vertebral column, clearly developed independently.