FB2025_05 , released December 11, 2025
FB2025_05 , released December 11, 2025
CV Term Report
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General Information
Term penile erection ID (Ontology) GO:0043084 (Gene Ontology)
Definition The hardening, enlarging and rising of the penis which often occurs in the sexually aroused male and enables sexual intercourse. Achieved by increased inflow of blood into the vessels of erectile tissue, and decreased outflow.
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Only view relationship: 
mating behavior
 |__copulation_____________________________________
reproductive process                               |
 |__multicellular organismal reproductive process__|
                                                   penile erection
                                                    |__regulation of penile erection
                                                        |__negative regulation of penile erection
                                                        |__positive regulation of penile erection
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Is a multicellular organismal reproductive process
Part of copulation
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Wikipedia:Erection#Penile_erection