Comprehensive Osteopathic Medical Licensing Examination (COMLEX USA) Practice

Chapman reflex for cardiac function can be found at which anatomical landmark?

1. 3rd and 4th anterior intercostal space

2. 2nd intercostal space

3. 5th anterior intercostal space

4. Lateral rib cage

The correct answer is: 3rd and 4th anterior intercostal space

The Chapman reflex points are specific areas on the body that correspond to the dysfunction or pathology of different organs and systems. For cardiac function, the relevant Chapman reflex points are located at the 3rd and 4th anterior intercostal spaces. This anatomical landmark is significant as it relates to the anatomical positioning of organs and structures in the thoracic cavity. The heart is situated within the mediastinum, and the 3rd and 4th intercostal spaces are in close proximity to the location of the heart, making them the appropriate areas to assess for cardiac issues through palpation of these reflex points. These points can indicate visceral pathology and are used in osteopathic diagnosis and treatment. The other options present anatomical locations that do not correlate with the Chapman reflex points for cardiac function. For example, the 2nd intercostal space is more associated with the lungs, while the 5th anterior intercostal space is tied to the function of the liver or diaphragm. The lateral rib cage has a more general significance and does not specifically indicate the cardiac function as closely as the 3rd and 4th intercostal spaces do. Understanding the Chapman reflex helps enhance the clinical assessment of various organ systems, especially in osteopathic practice