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Archives of Andrology
Journal of Reproductive Systems
Volume 3, 1979 - Issue 2
151
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Original Article

Mechanical properties of the mammalian vas deferens. II. In the active state

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Pages 119-125 | Received 26 Apr 1979, Published online: 09 Jul 2009
 

Abstract

The mechanical response of the vas induced by field stimulation is described in this paper. The experiments were performed, in vitro, on vasa from Sprague-Dawley albino rats. In the maintained ac tetanic stimulation, the active force achieves the peak magnitude in about 1 to 1.2 sec; thereafter, it relaxes gradually. For a given stimulus voltage (amplitude), a maximal response is elicited at 60 Hz. At 6000 Hz, and greater, no response is elicited. The ability to respond to stimulus dies out in 2 hr at 5°C above the normal temperature of 37°C; the ability to respond to stimulus remains unaffected at 5°C below the normal temperature. The active force is always larger than the passive force when the vas is subjected to titanic stimulation near its in situ length.

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