Where is the sino-atrial node (SAN) located in the right atrium?

Where is the sino-atrial node (SAN) located in the right atrium?
  1. In the right lower corner
  2. In the left lower corner
  3. In the right upper corner
  4. In the left upper corner

Solution

A patch of nodal tissue is present in the right upper corner of the right atrium, called the sino-atrial node (SAN).

Asked in: NCERT

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