The upper horizontal watershed separates the neck/shoulder region from the arm/thorax region.

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Prepare for the ACOLS MLD Exam. Enhance your skills with flashcards and multiple choice questions, complete with hints and explanations. Ace your certification!

Multiple Choice

The upper horizontal watershed separates the neck/shoulder region from the arm/thorax region.

Explanation:
Watershed lines divide lymph drainage into regional territories. The upper horizontal watershed sits across the upper body near the shoulder, marking the boundary between drainage toward the neck/shoulder region (cervical/supraclavicular nodes) and drainage toward the arm/thorax region (axillary and nearby chest nodes). Because of this, the neck and shoulder area tends to drain toward cervical nodes, while the arm and thorax drain toward axillary nodes. That separation is exactly what the statement describes, so it is correct.

Watershed lines divide lymph drainage into regional territories. The upper horizontal watershed sits across the upper body near the shoulder, marking the boundary between drainage toward the neck/shoulder region (cervical/supraclavicular nodes) and drainage toward the arm/thorax region (axillary and nearby chest nodes). Because of this, the neck and shoulder area tends to drain toward cervical nodes, while the arm and thorax drain toward axillary nodes. That separation is exactly what the statement describes, so it is correct.

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