Testicular vasomotion in different mammals
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Updated: Oct 9, 2026

Doppler Ultrasonography for Live Imaging and Quantification of Ovarian Vascular Function in Mice
Published on: November 14, 2025
O Collin1, J L Zupp, B P Setchell
1Department of Integrative Medical Biology, Section for Anatomy, Umeå University, Sweden. Ola.Collin@anatomy.umu.se
Abstract:
Vasomotion is a rhythmical variation in arterial blood flow present in many different organs among them the rat testis. Vasomotion is suggested to play an important role for the transvascular fluid exchange and the exchange of nutrients over the capillary wall as well as the formation of interstitial fluid. The present study was undertaken to elucidate whether vasomotion is present in the testes of different species independent of their anatomical vascular topography. Blood flow in the testes of mouse, brush-tailed possum, tammar wallaby, ram and human was investigated by using a laser Doppler flowmeter. Vasomotion was found in all the species investigated.
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