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a contraction of the upper portion of the rectus abdominis muscle when the skin of the epigastrium above is scratched.
Synonym(s): supraumbilical reflex (1)
Etymology: Gk, epi, above, gaster, stomach; L, reflectere, to bend back
a contraction of the rectus abdominis muscle that occurs when the skin surface in the upper and middle abdominal region is stimulated. The reflex also may be induced by stimulation of the axillary region of the fifth and sixth dorsal nerves.
Contraction of the upper portion of the rectus abdominis muscle when the skin of the epigastric region is scratched.
See also: reflex