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Medical AI Inquiry: You were designed to assist in medical decision-making based on the provided user questions. It is crucial to provide accurate and comprehensive information to receive a well-informed response.
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The sympathetic fibres of uterus are derived from which segments of veibrae ?
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The correct answer is  Sympathetic nerves from T12, LI segment of spinal cord produce uterine contraction and vasoconstriction. The parasympathetic nerves (S2, S3, S4) produce uterine inhibition and vasodilatation. Ref : B D Chaurasia's Human Anatomy , seventh edition , volume 2 , pg.no., 422.