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raphe

   Also found in: Dictionary/thesaurus, Encyclopedia, Wikipedia 0.01 sec.
raphe /ra·phe/ (ra´fe) pl. ra´phae   a seam; the line of union of the halves of various symmetrical parts.
raphe of penis  a narrow dark streak or ridge continuous posteriorly with the raphe of scrotum and extending forward along the midline on the underside of the penis.
perineal raphe  a ridge along the median line of the perineum that runs forward from the anus; in the male, it is continuous with the raphe of scrotum.
raphe of scrotum  a ridge along the surface of the scrotum in the median line, continuous with the perineal raphe and the raphe of penis.

ra·phe or rha·phe (rf)
n. pl. ra·phae (-f)
A seamlike line or ridge between two similar parts of a body organ, as in the scrotum.

raphe
[rā′fē]
Etymology: Gk, rhaphe, seam
a crease, ridge, or seam of the halves of various symmetric parts, such as the abdominal raphe of the linea alba or the raphe penis, which appears as a narrow dark streak on the inferior surface of the penis. Also spelled rhaphe.

raphe [ra´fe]
a seam; anatomic nomenclature for the line of union of the halves of various symmetrical parts.
abdominal raphe linea alba.

raphe (ra´fe),
n (
pl raphae) a crease or ridge that divides an organ in half.
n the ridge of oral mucosa that marks the median line of the hard palate and the median palatine suture between the two palatal shelves to form the secondary palate embryonically.

raphe
a seam; line of union of the halves of various symmetrical parts.

abdominal raphe
linea alba.
raphe nuclei
small group of serotenergic cells in the midline of the brainstem; may be involved in the initiation of sleep.


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Dopamine may still have a key role, the researchers noted, which is why they were surprised to find harmful effects of stress converging in a brain region- the dorsal raphe nucleus --where nerve cells that use serotonin, a chemical nerve signal that has been associated with wake and sleep cycles, mood, anger, status and aggression, are abundant.
From there they project into the LC and other areas such as the reticular formation and the raphe nuclei, which play a role in REM sleep.
But it is chiselled in stone, when the rise in the core body temperature takes place, then the midbrain Reticular Formation Dorsal Raphe Nuclei neurons are firing at their best possible rates.
 
 
 
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