THE DEVELOPING HUMAN FOETUS- RELATIVE GROWTH OF UTERUS COMPARED TO OVARIES
Journal Title: Journal of Evolution of Medical and Dental Sciences - Year 2018, Vol 7, Issue 44
Abstract
BACKGROUND Uterus is a constituent of the internal female reproductive tract which develops from a paired paramesonephric duct, originating from coelomic epithelium extending beside the mesonephric ducts. The paired duct begins to fuse from vaginal plate and forms the primordial body of the uterus and the unfused lateral arms form the uterine tubes. Data regarding the development and maturation (ontogeny) of the uterus in human foetuses of different age groups is scarce, necessitating further study of the most important female genital organ. MATERIALS AND METHODS Seventy (70) foetuses of different Crown-Rump Lengths (CRL) and ranging from 14th week to 40th weeks were studied in the Department of Anatomy, Regional Institute of Medical Sciences (RIMS), Imphal, Manipur. The developmental stages of the uterus and ovaries from 14 weeks onwards till term were studied, categorised into six groups of specific age period. Time of appearance to naked eye and its gross study, gradual maturation and corresponding changes in size and shape of the uterus and ovaries as age advances and dimensions were recorded. RESULTS The foetal uterus was located in the false pelvis between the urinary bladder anteriorly and rectum posteriorly. Cervical segment is more than the uterine body throughout foetal life. The ratio of the length of the uterus to the ovary expressed in decimal form is 0.73 from 14 - 18 weeks. By 20 weeks, the ratio becomes 1.0. Thereafter, 24 weeks onwards the uterus overgrows the ovaries progressively and the ratio of the lengths reverses and attains a ratio of 1.79 at 40 weeks. CONCLUSION In the earliest specimen i.e. 14th week gestational age, ovary measures 9.5 mm and uterus measures 6.93 mm, ratio being 0.73. By the 18th week, the dimension is similar at 10 mm each and the ratio reaches 1.0. Thereafter, the ovaries continue to outgrow the uterus and by the 26th week the ovary-uterine ratio reaches 1.46. This reversal of ratio remains m
Authors and Affiliations
Keisam Anupama Devi, Renuca Karam
Keywords
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- EP ID EP549213
- DOI 10.14260/jemds/2018/1066
- Views 93
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