血管舒缓素原，激肽释放酶原：血管舒缓素的无活性前身，正常见于血液；各种物理、化学改变皆可使之转化成血管舒缓素。例如凝血因子Ⅻ(Hageman因子)即可活化血浆的血管舒缓素原- metroplasty
- metropolis
- metroptosis
- metrorrhagia
- metrorrhea
- metrorrhexis
- metrosalpingitis
- metrosalpingography
- metroscope
- metrostasis
- metrostaxis
- peridurogram
- peridurography
- periencephalitis
- periencephalography
- perienteric
- perienteritis
- perienteron
- periependymal
- periepithelioma
- periesophageal
- periesophagitis
- perifascicular
- perifistular
- perifocal