The raphe is a slightly depressed area on the opposite side of the hilum from the micropyle.
They are located close to the median raphe , ventromedial to the hypoglossal nucleus.
The second pathway arises from the median raphe and enervates the hippocampus and appears to mediate resilience and adaptation to stress.
Its fibers pass dorsally from an extensive anterior attachment to insert on the pharyngeal raphe , the pharyngeal tubercle of the occipital bone.
Because most medullary raphe neurons that project to motoneurons are inhibited by vagal afferents.
In rats, the CO2-sensitive neurons of the caudal medullar raphe act during sleep only.
If the variant is bilateral the deviant muscle plate has a raphe in the median line.
Through the raphe , the living diatom secretes mucilage, with which it may attach to a substrate or move by gliding over the substrate.
Stimulation of 5 - HT1A receptors in the raphe regulates serotonin synthesis and release.
Second, there is a midbrain trigger, perhaps in serotonergic neurons of the dorsal raphe .