ADA NBDHE Dental Hygienist

Category - Scientific Basis for Dental Hygiene Practice

Where does the vascular system originate?
  1. Endothelial cells
  2. Mesenchymal cells
  3. Finer vessels
  4. Endochondral
Explanation
Answer: B - The vascular system originates from mesenchymal cells that come together and form tubular structures composed of endothelial cells. The vascular system consists of the heart, blood vessels, and lymphatics.
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