junction of superior esophageal nerve and stomatogastric nerve (sensu Cancer borealis)

The junction between the stomatogastric nerve (STN) and the superior esophageal nerve (SON) shows synaptic structures. Octopamine may be released at this site by projection neurons; its application at this junction induces action potentials in the axons of the modulatory commissural neuron 5 (MCN5) that project from the commissural ganglia to the stomatogastric ganglion (STG).

유형 Nerve
상위 구조물 functional part of brain

자주 묻는 질문

What is the junction of the superior esophageal nerve and stomatogastric nerve (sensu Cancer borealis)?
In Cancer borealis, the junction between the stomatogastric nerve (STN) and the superior esophageal nerve (SON) is a site where synaptic structures have been identified. Neuromodulatory substances such as octopamine may be released at this junction by projection neurons, influencing the activity of modulatory commissural neurons that project to the stomatogastric ganglion.
Where is this junction located?
This junction is located along the course of the stomatogastric nerve as it runs from the esophagus toward the stomatogastric ganglion in Cancer borealis. The superior esophageal nerve meets the stomatogastric nerve at this point before the combined nerve continues to the stomatogastric ganglion, which sits on the dorsal surface of the foregut.
What is the function of this junction?
This junction is involved in neuromodulatory signaling within the stomatogastric nervous system. Octopamine released here may be involved in activating projection neurons such as the modulatory commissural neuron 5 (MCN5), which projects from the commissural ganglia to the stomatogastric ganglion. This modulation is thought to influence gastric mill and pyloric circuit activity.
What conditions may affect this junction?
In experimental contexts, application of neuromodulators such as octopamine at this junction may be associated with changes in the firing patterns of commissural projection neurons and, consequently, in gastric mill and pyloric rhythm generation. Physical damage, chemical lesioning, or cooling experiments may also alter signal transmission through this site.
How is this junction examined?
This junction is studied using electrophysiological techniques including extracellular suction electrode recordings and intracellular sharp electrode recordings in semi-intact or dissected nervous system preparations of Cancer borealis. Immunohistochemistry using antibodies against octopamine and synaptic markers, combined with confocal microscopy, can reveal synaptic structures and neuromodulator localization at this site.

관련 구조물

의학적 면책 조항

이 콘텐츠는 교육 및 정보 제공 목적으로만 제공됩니다. 전문적인 의학적 조언, 진단 또는 치료의 대체물로 의도되지 않습니다. 의학적 상태에 관한 질문이 있으면 항상 의사 또는 기타 자격을 갖춘 의료 제공자의 조언을 구하세요. 이 웹사이트에서 읽은 내용 때문에 전문적인 의학적 조언을 무시하거나 그것을 구하는 것을 미루지 마세요.

Educational Disclaimer

This content is for educational and informational purposes only. It is not a substitute for professional medical advice, diagnosis, or treatment. Always consult a qualified healthcare provider for medical decisions.

Data sources: Terminologia Anatomica, Foundational Model of Anatomy, Wikidata.