Essays on Anatomy Page 4

Certain animals lack lungs and cannot survive in environments with inadequate lung function. Instead, these creatures rely on gills to obtain oxygen from water. It is noteworthy that the amount of oxygen present in water is just 1/20th of that found in the equivalent volume of air. Gills greatly increase the area available for gas…

Echocardiography (echo) can be used to evaluate your cardiac performance, the function of your heart valves, the thickness and motion of your heart walls, and the size of your heart chambers. An echo can help diagnose many heart conditions. Cardiac performance An echocardiogram can show how well your heart pumps blood (cardiac performance). To evaluate…