Phenotype: pharyngeal arch 1 joint absent, abnormal
Note: This statement combines anatomy and/or ontology terms with phenotype quality terms to create a complete phenotype (EQ) statement. For detailed information on individual terms, click the hyperlinked term name.
Name: pharyngeal arch 1
Synonyms: mandibular arch, visceral arch 1
Definition: The first pharyngeal arch, also known as the mandibular arch, forms the jaw. The first pharyngeal arch gives rise to elements of the jaw, with the most anteriorly positioned cranial neural crest cells contributing to mandibular arch structures, including Meckel's and palatoquadrate cartilages that constitute the lower and upper jaw respectively.
Ontology: Anatomy Ontology [ZFA:0001612]
Name: joint
Synonyms: joints
Definition: Anatomical cluster which consists of two or more adjacent bones or cartilages, which may be interconnected by various types of tissue.
Ontology: Anatomy Ontology [ZFA:0001596]
Name: absent
Synonyms: absence, absent from organism
Definition: A quality denoting the lack of an entity.
Ontology: Phenotypic Quality Ontology [PATO:0000462]