| gptkbp:instanceOf | gptkb:Endocrine_gland 
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                                | gptkbp:affects | Light exposure 
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                                | gptkbp:alsoKnownAs | gptkb:Conarium gptkb:Epiphysis_cerebri
 
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                                | gptkbp:associatedWith | Seasonal reproduction in some animals 
 | 
                        
                            
                                | gptkbp:bloodSupply | gptkb:Posterior_cerebral_artery 
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                                | gptkbp:calcifiesWithAge | True 
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                                | gptkbp:connectedTo | gptkb:Habenular_commissure gptkb:Posterior_commissure
 
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                                | gptkbp:contains | gptkb:Pinealocytes Glial cells
 
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                                | gptkbp:developmentOrigin | gptkb:Diencephalon 
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                                | gptkbp:discoveredBy | Galen 
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                                | gptkbp:firstDescribed | 2nd century AD 
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                                | gptkbp:influenced | Circadian rhythms 
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                                | gptkbp:innervates | gptkb:Sympathetic_nervous_system 
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                                | gptkbp:location | gptkb:Brain 
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                                | gptkbp:notableFor | Production of melatonin 
 | 
                        
                            
                                | gptkbp:partOf | gptkb:Epithalamus 
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                                | gptkbp:presentIn | Most vertebrates 
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                                | gptkbp:regulates | Sleep-wake cycle 
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                                | gptkbp:scientificName | gptkb:Glandula_pinealis 
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                                | gptkbp:secretes | gptkb:Melatonin 
 | 
                        
                            
                                | gptkbp:shape | Pine cone-shaped 
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                                | gptkbp:significance | gptkb:Sleep_disorders Calcification
 Pineal tumors
 
 | 
                        
                            
                                | gptkbp:size | About 5-8 mm 
 | 
                        
                            
                                | gptkbp:symbolizes | Third eye (in some cultures) 
 | 
                        
                            
                                | gptkbp:vascularization | Rich blood supply 
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                                | gptkbp:bfsParent | gptkb:Third_Eye 
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                                | gptkbp:bfsLayer | 7 
 | 
                        
                            
                                | https://www.w3.org/2000/01/rdf-schema#label | Pineal Gland 
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