What point is located at the level of the lower border of the clavicle, 4cun lateral the Midline?

Question

BlackTom AI · Accepted Answer

The acupuncture cun system and the clavicular landmarks determine the correct point: Stomach meridian point ST‑13 (Qihu) is classically located on the chest at the lower border of the clavicle, 4 cun lateral to the anterior median line.

1) Relevant knowledge points:
- "Cun" is the proportional measurement used in TCM (patient’s own body measurements; e.g., the width of the patient’s thumb is approximately 1 cun).
- Anatomical reference: the anterior median line (midline of the chest) and the clavicle’s lower border are commonly used landmarks for locating chest points.
- ST meridian chest points are numbered sequentially from the thorax upward; nearby points differ by small shifts in level (above or below the clavicle) and lateral distance.

2) Step-by-step reasoning:
- The question requires the point located at the level of the lower border of the clavicle and 4 cun lateral to the midline.
- Locate the lower border of the clavicle along the anterior chest wall.
- Measure 4 cun laterally from the anterior median line along that horizontal level.
- The classical reference positions identify ST‑13 (Qihu) exactly at this location: on the chest at the inferior margin of the clavicle, 4 cun lateral to the midline.

3) Intermediate location checks (comparison with other options):
- ST‑12 (Quepen) lies in the supraclavicular region (above the clavicle, in the supraclavicular fossa) — so it is superior to the clavicle, not at the lower border.
- LU‑1 (Zhongfu) is located on the chest more laterally (in the deltopectoral region) at approximately 6 cun lateral to the midline, not 4 cun at the lower clavicular border.
- ST‑11 (Qishe) lies at the root of the neck near the clavicle’s sternal end (more medial and at a higher/anterior neck level), not at the clavicle’s lower border 4 cun lateral.

4) Why the correct answer is correct:
- The exact classical anatomical description of ST‑13 (Qihu) matches the provided landmark: lower border of the clavicle, 4 cun lateral to the midline. This uniquely identifies ST‑13 among the listed choices.

5) Why other options are incorrect (brief):
- ST‑12: above/clavicular fossa (superior), not at lower clavicle border.
- LU‑1: more lateral (~6 cun) in delto‑pectoral region.
- ST‑11: near the sternal end/root of neck, different level/position.

Conclusion: The correct point is ST‑13 Qihu, which matches the provided answer (c. St‑13 Qihu).

What point is located at the level of the lower border of the clavicle, 4cun lateral the Midline?单项选择题

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