Ligman S H, Brownell P H
J Comp Physiol A. 1985 Jul;157(1):31-7. doi: 10.1007/BF00611092.
The peptide-secreting bag cell neurons of Aplysia californica activate a long-lasting, complex behavior called egg laying. During egg laying some organ systems (reproductive) are more active than others (digestive) suggesting that blood flow to these tissues may change in accordance with their activities during egg laying. To examine this possibility we used a semi-intact preparation of the three major arteries innervated by the abdominal ganglion. We found that electrically stimulated bursts of bag cell activity triggered a long-lasting (greater than 1 h) increase in contractile activity in two arteries, the anterior and gastroesophageal, but did not affect contractions of the third (abdominal) artery. The arterial responses were not affected either in form or duration by denervation of the arteries, suggesting that the increase in contractile activity was mediated by hormonal actions of bag cell transmitters on vasoconstrictor muscles. In intact animals this differential action on the arterial system may cause a long-term decrease in blood flow to relatively inactive tissues (digestive and locomotory organs) while increasing circulation to tissues involved in egg production (ovotestis and oviduct).
加州海兔的肽分泌袋状细胞神经元会激活一种名为产卵的持久而复杂的行为。在产卵过程中，一些器官系统（生殖系统）比其他系统（消化系统）更活跃，这表明在产卵期间流向这些组织的血流量可能会根据它们的活动而变化。为了检验这种可能性，我们使用了一种由腹神经节支配的三条主要动脉的半完整制剂。我们发现，电刺激引发的袋状细胞活动爆发会导致两条动脉（前动脉和胃食管动脉）的收缩活动出现持续较长时间（超过1小时）的增加，但不会影响第三条动脉（腹动脉）的收缩。动脉的反应在形式或持续时间上均不受去神经支配的影响，这表明收缩活动的增加是由袋状细胞递质对血管收缩肌的激素作用介导的。在完整的动物中，这种对动脉系统的差异作用可能会导致相对不活跃的组织（消化器官和运动器官）的血流量长期减少，同时增加参与产卵的组织（卵睾和输卵管）的循环。
