FB2025_05 , released December 11, 2025
FB2025_05 , released December 11, 2025
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Term proximal stomach smooth muscle contraction ID (Ontology) GO:0014847 (Gene Ontology)
Definition A process in which force is generated within smooth muscle tissue, resulting in a change in muscle geometry. This process occurs in the proximal stomach. Force generation involves a chemo-mechanical energy conversion step that is carried out by the actin/myosin complex activity, which generates force through ATP hydrolysis. The proximal stomach, composed of the fundus and upper body, shows low frequency, sustained tonic contractions that are responsible for generating a basal pressure within the stomach.[ PubMed:30252381 ]
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smooth muscle contraction
 |__tonic smooth muscle contraction_________________
gastro-intestinal system smooth muscle contraction  |
 |__stomach smooth muscle contraction_______________|
                                                    proximal stomach smooth muscle contraction
                                                     |__stomach fundus smooth muscle contraction
                                                         |__regulation of stomach fundus smooth muscle contraction(+)
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Is a tonic smooth muscle contraction
stomach smooth muscle contraction
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