the process of giving birth

出産の過程

labor beginning prior to the 37th week of gestation

妊娠37週目以前に始まる陣痛

the presentation during labor of the head of the fetus at an abnormal angle

分娩時に胎児の頭が異常な角度で出現すること

shortening of the uterine cervix and thinning of its walls as it is dilated during labor

分娩中に子宮頸部が短くなり、その壁が薄くなること

a rhythmic tightening in labor of the upper uterine musculature that contracts the size of the uterus and pushes the fetus toward the birth canal

分娩時に子宮の上部の筋肉がリズミカルに収縮し、子宮のサイズを縮小させて胎児を産道へ押し出す現象

the state of being pregnant; the period from conception to birth when a woman carries a developing fetus in her uterus

妊娠の状態; 受精から出産までの期間、女性が子宮内で胎児を育てる期間