Which point is located 1.5 cun proximal to HT 7 on the radial side of the tendon of flexor carpi ulnaris?

• A. HT 4
• B. HT 5
• C. HT 6
• D. HT 7

Answer: (A)

The idea here is to locate points along the Heart channel using a consistent proximal progression from a known landmark, with the flexor carpi ulnaris tendon as the reference on the radial (thumb) side of the wrist.

HT 7 (Shenmen) sits at the wrist crease on the radial side of the FCU tendon. If you move 1.5 cun toward the elbow along the same side of that tendon, you reach HT 4. In this region, the Heart channel runs in a line along the radial side of the FCU, and the successive points are spaced at regular cun intervals from HT 7 upward toward the elbow. So 1.5 cun proximal from HT 7 aligns with HT 4.

For context, 1 cun is roughly the width of the patient’s thumb at the knuckle, so 1.5 cun is about one and a half thumb-widths. This helps you gauge the distance consistently across patients.

The other nearby points lie at different distances along that same track, so they would be located at positions corresponding to their respective proximities from HT 7 (for example, HT 5 or HT 6 would be closer or farther than 1.5 cun).