PTA Physical Therapy Assistant

Category - Data Collection

The angle of Louis is an important landmark for all of the following except,
  1. Counting ribs
  2. Palpation of trachea
  3. Ascending aorta ends at this level
  4. Marking the upper limit of the base of the heart
Explanation
Answer: B - The angle of Louis is not an important landmark for palpation of the trachea.

The trachea can be palpated usually at the jugular notch or suprasternal notch, which is the superior border of the manubrium sternum between the two clavicles.

The angle of Louis is also a landmark for the ending of the ascending aorta, the beginning of the arch of aorta, and marks the plane which separates the superior and inferior mediastinum.
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