Histology and functional morphology of the oviduct of an oviparous snake, Diadophis punctatus

Journal of Morphology
M Jane Perkins, Brent D Palmer

Abstract

Oviductal functional morphology remains poorly understood in oviparous snakes, particularly in regard to oviductal formation of albumen and the eggshell and to sperm storage. The oviduct of Diadophis punctatus was examined using histology and scanning electron microscopy to determine oviductal functional morphology throughout the reproductive cycle. The oviduct is composed of four morphologically distinct regions: infundibulum, uterine tube, uterus, and vagina. The infundibulum is thin, flaccid, and lined with simple ciliated cuboidal epithelial cells. The tube contains ciliated and secretory epithelial cells, which reach a maximum height and hypertrophy during early gravidity and produce glycosaminoglycans. The posterior portion of the tube contains temporary sperm storage receptacles. The uterus retains eggs throughout gestation and secretes the eggshell constituents. The endometrial glands of the uterus hypertrophy during vitellogenesis and become depleted of the secretory granules during gravidity. The functional morphology of the oviduct therefore shows cyclical changes that are correlated with eggshell formation. The vagina consists of thick longitudinal and circular smooth muscle layers, which may serve in retention of e...Continue Reading

References

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Citations

Jul 2, 2004·Journal of Experimental Zoology. Part A, Comparative Experimental Biology·David M Sever, William A Hopkins
Oct 6, 2018·The Anatomical Record : Advances in Integrative Anatomy and Evolutionary Biology·Erick Augusto BassiSelma Maria de Almeida-Santos
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Jan 31, 2008·The Anatomical Record : Advances in Integrative Anatomy and Evolutionary Biology·Xiangkun HanQiusheng Chen
Nov 2, 2019·The Anatomical Record : Advances in Integrative Anatomy and Evolutionary Biology·Karina M P SilvaSelma M Almeida-Santos
Dec 26, 2001·The Journal of Experimental Zoology·David M Sever, William C Hamlett
Apr 2, 2011·The Anatomical Record : Advances in Integrative Anatomy and Evolutionary Biology·Katiane de Oliveira Pinto Coelho NogueiraClóvis Andrade Neves
Jul 13, 2002·The Journal of Experimental Zoology·Jane E Girling
Apr 16, 2018·Journal of Experimental Zoology. Part B, Molecular and Developmental Evolution·Henrique B BrazMichael B Thompson
Aug 1, 1998·Journal of Morphology·Mari Carmen UribeLouis J Guillette
Jul 26, 2005·Comparative Biochemistry and Physiology. Part B, Biochemistry & Molecular Biology·Murray ThomsonMichael B Thompson

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