The tiger's mouth belongs to the hand Yangming large intestine meridian, between the first and second metacarpals, in the dorsal muscle of the first interosseous bone, and there is a transverse head of adductor pollicis in the deep layer; There is a venous network on the back of the hand, which is the starting point of the cephalic vein, and the proximal end of the acupoint is just where the radial artery penetrates into the palm from the back of the hand; Dorsal palmar nerve with superficial branch of radial nerve, palmar proper nerve with deep median nerve.
However, there are superficial branches of radial nerve, palmar proper nerve of median nerve and dorsal vein network, and the proximal part is where radial artery penetrates into palm from the back of hand.
Extended data:
This point is the original point of the large intestine meridian of hand Yangming, and it is good at clearing the stagnation heat of Yangming, eliminating the wind evil of facial teeth and dredging the meridians of head and face. It is an important acupoint for treating fever and various diseases of head, face and five senses. "Song of the Four Generals" summarizes this effect as "a bumper harvest of grain".
Because the large intestine meridian and the lung meridian are exterior and interior, the lung governs fur, the large intestine meridian is the exterior of the lung meridian, and Hegu is directly connected with the collaterals of the lung meridian, so this point can spread the lung, regulate qi, dispel wind and relieve exterior syndrome, and regulate sweating and purging heat, which is an important point for treating exterior syndrome. For sweating syndrome, this point has a two-way conditioning effect, no sweat can cause sweating, and excessive sweating can stop sweating. In addition, the purgative effect of Hegu can also be used for malaria fever.
Baidu encyclopedia-Hegu