Histological variation of different segments of fallopian tube in reproductive women

Introduction and objectives: Due to increasing rate of infertility, oviducts and their structures gaining importance and have become a major subject of research. The aim is to ascertain any histological variation of different segments of human fallopian tube in reproductive women and the research work could be utilized for investigation and management of infertility. 
Material and methods: Fallopian tubes of reproductive women were collected from fresh unembalmed human cadavers received in the department of Anatomy and Forensic Medicine of FAA  Medical College, Barpeta, Assam. Specimens were divided into two groups, Group I -18 to 29 years, and Group II - 30 to 41.  Fifty specimens were collected from each group. Samples measuring 1.5cm were taken from each segment of the fallopian tube. The slides were prepared using the standard laboratory procedure and under low and high power objectives the  whole thickness  were observed and epithelial height was measured by using micrometry slides. Results: All fallopian tube consists serous layer composed of single layer mesothelial cells and connective tissue. Muscle layer in all the segments consists of outer longitudinal and inner circular layer of smooth muscle cells except intramural segments which contains one additional internal longitudinal muscle layer. In all the tubes intramural segment very low mucosal folds ,  in isthmus segment only one or two primary mucosal folds and in ampulla arborization of mucosal folds were observed. Epithelium consists of simple columnar type and contains three types of cells, ciliated, secretory & peg cells in all the tubes. Highest epithelial height was recorded in ampullary segment (33.26µm and 33.57µm ) and lowest in intramural segment (28.43 µ, and 28.64µm) but no significant difference (p< 0.01) between the two groups in the same segment was recorded.
Conclusion: In both the groups Muscle layer is thickest in the intramural segment and thinnest in the infundibular segment and epithelial height was highest in ampullary segment (33.57 µm).