alyssa18concepcion alyssa18concepcion
  • 09-12-2020
  • Medicine
contestada

The lymph vessels have a structure within that keeps the lymph moving in one direction and prevents backflow, this structure is called a
A. door
B. valve
C. closing
D. gate

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madisongibb12
madisongibb12 madisongibb12
  • 09-12-2020
B. Valve, I believe
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