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MAMMALIAN PHENOTYPE - ANNOTATIONS

The Mouse Adult Gross Anatomy Ontology and Mammalian Phenotype Ontology are downloaded weekly from the Mouse Genome Informatics databases at Jackson Laboratories (ftp://ftp.informatics.jax.org/pub/reports/index.html). For more information about these ontologies, see the MGI Publications Page at http://www.informatics.jax.org/mgihome/other/publications.shtml.

Term:absent fourth pharynegal pouch
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Accession:MP:0013266 term browser browse the term
Definition:absence of the fourth endodermal branchial pouch, normally located between the fourth and sixth branchial arches (a fifth arch never establishes itself in amniotes); in most mammals, excluding rodents, the dorsal part of each fourth pouch develops into a superior parathyroid gland (parathyroid IV), which lies on the dorsal surface of the thyroid gland; the elongated ventral part of each fourth pouch develops into the ultimopharyngeal body, which fuses with the thyroid gland, giving rise to the calcitonin-producing parafollicular or C-cells of the thyroid gland
Synonyms:exact_synonym: absent 4th branchial pouch;   absent 4th pharyngeal pouch;   absent fourth branchial pouch



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  mammalian phenotype 5421
    embryo phenotype 12
      abnormal embryo morphology 2
        abnormal embryonic tissue morphology 1
          abnormal pharyngeal pouch morphology 0
            abnormal fourth pharyngeal pouch morphology 0
              absent fourth pharynegal pouch 0
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