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Ontology Browser

Parent Terms Term With Siblings Child Terms
pharynx +    
surface groove +    
cavity of pharynx +  
choanal groove 
chordate pharynx +  
chromaffin system +  
ciliated pit +  
endocrine gland +  
endocrine pancreas +  
endostyle +  
An endostyle is a longitudinal ciliated groove on the ventral wall of the pharynx which produces mucus to gather food particles. It is found in urochordates and cephalochordates, and in the larvae of lampreys. It aids in transporting food to the esophagus. It is also called the hypopharyngeal groove. The endostyle in larval lampreys (ammocetes) metamorphoses into the thyroid gland in adults, and is regarded as being homologous to the thyroid gland in vertebrates. However, Dumont, et al. question whether the endostyle in ammocetes is homologous with that of the urochordates and cephalochordates. Since the endostyle is found in the three branches of chordates, it is presumed to have arisen in the common ancestor of these taxa, along with a shift to internal feeding for extracting suspended food from the water.
Hatschek's pit 
head kidney +  
hypothalamo-hypophyseal system 
hypothalamus-pituitary axis 
intertragic incisure 
interventricular groove +  
laryngotracheal groove 
metotic fissure 
nasolabial groove 
nuchal groove 
optic fissure 
optic pit 
pancreatic system 
pharyngeal cleft +  
renin-angiotensin system 
ruminant esophageal groove 
skin crease +  
sulcus intermedius 
sulcus limitans of neural tube +  
sulcus ypsiloniformis 
thyroid primordium +  
ventral sulcus 
ventral throat pleat 

Related Synonyms: hypopharyngeal groove
Xrefs: ANISEED:1235299 ;   BSA:0000064 ;   BTO:0003173 ;   Wikipedia:Endostyle
External Ontologys: n/a NCBITaxon:7712 ;   n/a NCBITaxon:7735 ;   n/a NCBITaxon:7745 ;   n/a NCBITaxon:7776
Definition Sources: Wikipedia:Endostyle

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