. Obstetrics for nurses. essentially a muscular organ, whose chieffunctions are the reception and retention of the fertilized ovum untilmaturity, and finally the expulsion of the fetus at the time of labor. Themenstrual flow periodically proceeds from the uterus when there is nofertilized ovum to become implanted upon the lining membrane, whichhas been carefully prepared for it during the premenstrual period. The uterus is a pear-shaped organ, which consists of two portions,the cervix and the body. The former projects into the upper end ofthe vagina and is pierced by a fusiform passage, the ce
. Obstetrics for nurses. essentially a muscular organ, whose chieffunctions are the reception and retention of the fertilized ovum untilmaturity, and finally the expulsion of the fetus at the time of labor. Themenstrual flow periodically proceeds from the uterus when there is nofertilized ovum to become implanted upon the lining membrane, whichhas been carefully prepared for it during the premenstrual period. The uterus is a pear-shaped organ, which consists of two portions,the cervix and the body. The former projects into the upper end ofthe vagina and is pierced by a fusiform passage, the cervical canal, whichterminates at its free end by the external os or mouth of the womb,and at its upper end by the internal os, which forms the communicationwith the cavity of the body. The relation between cervix and body variesaccording to the age of the woman and whether or not she has bornechildren. In young girls, the cervix is twice as long as the body; in 14 TEXTBOOK OF OBSTETRICS FOR NURSES mature nulliparous /(%. Fig. 6.—Sagittal section through bodj^ ofadult woman. (Williams aft(>r KpHv) women the two are about equal in length; whereasiu parous women the body istwice as long as the cervix. TheI length of the entire uterus, body and cervix varies likewise; the in-1 fantile organ is to centi-) meters (1 to IV5 inches), and theI mature nulliparous organ ; centimeters (27., to 37,,inches) long, compared with centimeters (, to 375inches) in the multiparous in-dividual. The nulliparous organweighs about 40 grams (I73ounces) and never regains itsoriginal Aveight after child-birth,when it weighs 60 to 70 grams (2to 2^/3 ounces). In the non-pregnant state, theuterus is a pelvic organ, which isfreely movable within the pelviccavity, where it is held in posi-tion bv various liraments. It is roughly pear-shaped,the cervix correspond-ing to the stem anterior surfaceof the c e r V i x andlower part of the bodyare in apposition withthe b
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Keywords: ., bookcentury1900, bookdecade1920, booksubjectobstetrics, bookyear1
