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Ontology Browser

Parent Terms Term With Siblings Child Terms
head +    
adipose eyelid 
antenna +  
beak +  
cephalic clasper 
clasper +  
collection of hairs on vertex 
cranial appendage +  
cranial ganglion +  
cranial placode +  
cranial salt gland +  
ear +  
elephant trunk 
embryonic facial prominence +  
embryonic head +  
feathered ear tuft 
future piston +  
future pituitary gland +  
hair of head +  
head bone +  
head capsule 
head connective tissue +  
head electric organ 
head external integument structure +  
head mesenchyme +  
head sensillum +  
hemipenis +  
insect head segment +  
insect larval head +  
interorbital septum 
intromittent organ (Ascaphus type) +  
joint of auditory ossicle +  
junk chamber 
lymph node of head +  
melon organ +  
mormyromast organ 
mouth +  
mucosa of sphenoidal sinus 
naris +  
nasal air sac 
nerve of head region +  
neural tube derived brain 
nuchal hump 
occipitofrontalis muscle +  
panarthropod head +  
penis +  
piston cartilage 
posterior surface of head +  
priapium +  
A complex muscular and bony clasping and copulatory organ derived mainly from the pelvic fins, found under the head of male Phallostethoidea with the anus opening on one side and the genital pore on the other. The structure varies among family members. Hook-like ctenactia articulate basally with the aproctal axial which is movably articulated with the proctal axial bone itself, suspended anteriorly by the outer (and sometimes inner) pulvinular bone from the cleithrum and perhaps the urohyal. Other elements are the priapal ribs, the anteplural cartilage (supporting elements along with the cleithrum and the pulvinar), the toxactinium, the infrasulcar and the uncus (forming the claspers along with the ctenactinium), the penial, basipenial, papillary, prepapillary and cristate bones (forming the papillary unit).
Rathke's pouch +  
roof of mouth +  
scalp +  
skeletal musculature of head +  
skin of head +  
skull +  
spermaceti organ 
spine appendage of head +  
subdivision of head +  
vasculature of head +  
venom gland musculature +  

Related Synonyms: priapia
External Ontologys: n/a NCBITaxon:270656
Definition Sources:,, ISBN:047175644X

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