stomatogastric nervous system

The part of the nervous system that controls the stomach, such as in crabs, lobsters, and flies

Loại Organ
Cấu trúc cha organ system subdivision

Cấu trúc con

insect stomatogastric nervous system Vessel

Câu hỏi thường gặp

What is the stomatogastric nervous system?
The stomatogastric nervous system (STNS) is the part of the peripheral nervous system in arthropods, such as crabs, lobsters, and insects, that controls the stomach and associated digestive structures. In decapod crustaceans, it consists of the stomatogastric ganglion, paired commissural ganglia, esophageal ganglion, and the connecting nerves, collectively coordinating the motor activity of the foregut.
Where is the stomatogastric nervous system located?
The stomatogastric nervous system is located along the esophagus and dorsal surface of the foregut in arthropods. In crustaceans such as crabs and lobsters, it is situated in the cephalothorax, running from the paired commissural ganglia near the esophagus to the stomatogastric ganglion on the dorsal stomach wall.
What is the function of the stomatogastric nervous system?
The stomatogastric nervous system is involved in generating and coordinating the rhythmic motor patterns that control the movements of the esophagus, gastric mill, and pyloric stomach. It contains central pattern generators that produce stereotyped motor rhythms for food transport and grinding, modulated by neuromodulatory input from commissural neurons and descending projections.
What conditions may affect the stomatogastric nervous system?
In research contexts, manipulations such as stomatogastric nerve transection, pharmacological application of neuromodulators, or temperature changes may be associated with significant alterations in STNS motor output. As a well-characterized invertebrate nervous system, it is used as a model to study general principles of neural circuit modulation, plasticity, and rhythm generation.
How is the stomatogastric nervous system examined?
The stomatogastric nervous system is examined using electrophysiological techniques applied to dissected or semi-intact preparations. Multiple extracellular and intracellular recordings can be made simultaneously from different nerves and neurons. Pharmacological bath application, immunohistochemistry, in situ hybridization, and imaging techniques are used to characterize its structure, neurochemistry, and functional organization.

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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.