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Ontology Browser
Term:
Parent Terms Term With Siblings Child Terms
endocrine system +    
pharynx +    
surface structure +    
adipose eyelid 
ala of nose 
barbel primordium +  
beak +  
caudal fin lower lobe 
caudal fin upper lobe 
caudal peduncle 
cavity of pharynx +  
chordate pharynx +  
chromaffin system +  
columella nasi 
dorsal organ 
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.
external gill 
external integument structure +  
external naris +  
gular region +  
Hatschek's pit 
head kidney +  
hypothalamo-hypophyseal system 
hypothalamus-pituitary axis 
insect pharynx 
lip +  
lower beak +  
median fin fold +  
nematode pharynx 
nuchal hump 
nuptial tubercle 
opercular flap +  
outer epithelium +  
paired limb/fin bud +  
pancreatic system 
papilla +  
renin-angiotensin system 
rhinarium 
scale +  
spiracle (sensu Vertebrata) 
thyroid primordium +  
tunicate tunic 
unicellular gland 
upper beak +  
urogenital papilla 
vent 
Westoll line 

Synonyms
Related Synonyms: hypopharyngeal groove
Xrefs: ANISEED:1235299 ;   BSA:0000064 ;   BTO:0003173 ;   Wikipedia:Endostyle
relational_adjective: endostylar
External Ontologys: never_in_taxon NCBITaxon:7776 ;   present_in_taxon NCBITaxon:7712 ;   present_in_taxon NCBITaxon:7735 ;   present_in_taxon NCBITaxon:7745
Definition Sources: Wikipedia:Endostyle

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