Abstract
AbstractA low dose (50 μg/kg) of reserpine was used in order to elucidate the possible difference in rate of noradrenaline depletion between the male genital organs, the submaxillary gland and the heart of the rat. Reserpine reduced the noradrenaline content of the male genital organs more slowly and less completely than that of the submaxillary gland and the heart. There were no differences in reserpine sensitivity between innervated and decentralized genital organs. The decentralized submaxillary gland, however, showed a tendency to less rapid initial depletion when compared with the innervated gland. It is suggested that the differences in depletion rate could be due to different properties of the short adrenergic neurons innervating the genital organs when compared with the ordinary long ones to the heart and the salivary gland. Another contributing factor may be differences in blood flow through the organs. It is further suggested that the genital organs have a lower sympathetic nerve impulse frequency in vivo.
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