Final answer:
The walls of the left ventricle seen in the parasternal and apical long axis views are the anterior and septal walls. This answer helps assess the function and structure of the left ventricle, critical in evaluating various cardiac conditions.
Step-by-step explanation:
The walls of the left ventricle that are visible in the parasternal and apical long axis views are the anterior and septal walls. In echocardiography, the parasternal long axis view typically allows visualization of the anterior wall of the left ventricle along with the interventricular septum, which separates the left and right ventricles. The apical long-axis view also provides a perspective on the anterior segment and the septal wall of the left ventricle. These views are important for assessing the ventricle's function and structure, particularly when evaluating conditions such as cardiomyopathy, myocardial infarction, or other cardiac abnormalities.
In summary, the correct answer to the question is 3) Anterior and septal walls. These examinations are critical for understanding the cardiac anatomy, including structures like the aortic valve, pulmonary valve, left ventricle, papillary muscle, and interventricular septum.