Ukuvukelwa
Ukuvukelwa (ngokwezokwelashwa: i-penis erection noma i-penisi tumescence) isenzakalo esingokomzimba lapho i-pensi iqinile, igcwale, futhi ikhule. I-Penile erection iwumphumela wokuxhumana okuyinkimbinkimbi kwezici ezingokwengqondo, zezinzwa, ze-vascular, ne-endocrine, futhi kuvame ukuhlotshaniswa Ukuvuswa ngokobulili, ukuheha ngokobulili noma i-libido, yize i-erections ingazenzakalela. Ukuma, i-engela, kanye nokuqondiswa kwe-erection kuyahlukahluka kakhulu phakathi kwabantu.
Ukuqhanyelwa (ngokomtholampilo: ukuqhanyelwa kwepipi noma tumescence yomthondo) kuyisimo sokuphila lapho ipipi liqina, lingene, futhi likhuliswe. Ukumiswa komthondo kuwumphumela wokusebenzelana okuyinkimbinkimbi kwezici zengqondo, imizwa, imithambo, kanye ne-endocrine, futhi kuvame ukuhlotshaniswa nokuvusa inkanuko yobulili, ukukhangwa ngokocansi noma i-libido,