Auricula Atrii Apr 2026

: A bloused fold projecting from the left atrium that lies near the left pulmonary veins. Functional Significance

: They act as "reservoirs" that can expand to increase the capacity of the atria during periods of high cardiac output or when blood flows quickly back to the heart. auricula atrii

: These appendages have a rough, trabeculated inner surface due to a network of pectinate muscles , which distinguishes them from the smoother main bodies of the atria. Location : : A bloused fold projecting from the left

: The right atrial appendage (RAA) specifically helps manage blood volume by releasing certain proteins. Clinical Importance auricula atrii