5.2 Ren mai
Location
On the anterior midline, 3 cun inferior to the sternocostal angle.
How to find
The distance between the sternocostal angle (➞3.5) and the
centre of the umbilicus is divided into 8 cun, which can vary
considerably from the patient’s finger cun. Therefore, only pro-
portional cun measurements should be applied here (helpful
device: elastic tape ➞2.3.1). From the sternocostal angle, meas-
ure 3 cun in an inferior direction and there locate Ren-13on the
anterior midline.
Located on the same level are ➞KID-20(0.5 cun lateral to the
midline), ➞ST-20(2 cun lateral to the midline) and ➞G.B.-24
(approximately on this level, in the 7th intercostal space, on the
mamillary line).
Needling
Vertically 0.5–1 cun. Caution: Peritoneum, pregnancy.
Actions/Indications
● Regulates the Stomach and counterflow Qi
● Regulates the Heart
Special features
Meeting point with the ST and S.I. channel
Upper Cavity SHANGWAN Ren-13
Ren-13
8 cun
Umbilicus
Sterno-
costal
angle 3 cun
Sternocostal
angle
Umbilicus
KID-20 Ren-13
KID-19 Ren-12
KID-18 Ren-11
KID-17 Ren-10
8 cun
5 cun
ke
ST-19
ST-20
3 cun
G.B.-24
in the 7th
intercostal space
6
7
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