The auricles increases the volume of the atrium, and yes, they are movable.
The auricles increases the volume of the atrium, and yes, they are movable.
Auricles (external ears) in bats are movable and designed to capture sound waves.
The auricles increases the volume of the atrium, and yes, they are movable.
The auricles increases the volume of the atrium, and yes, they are movable.
The ear-like structures that extend from the atria are the Auricles.
Auricles
Auricles
Field bindweed (Convolvulus arvensis) has clasping auricles at the base of its leaves. These auricles wrap around the stem, helping the plant to climb and twine around other vegetation.
Auricle can mean two things... part of the heart, or the movable part of the ear. In this case, I think that the ear meaning is more likely... and the reason that animal's ears move is so that they can direct their hearing in certain directions to listen for predators or pay attention to something without moving the rest of their bodies and giving away their hiding place.
Macrotia
The heart.
Large auricles refer to the external part of the ear, also known as the pinna, which is notably bigger than average. In anatomy, the term can also pertain to the atria of the heart, specifically the auricles that are the upper chambers receiving blood. Larger auricles in either context can affect function, such as sound collection in the case of the ear or blood flow and heart efficiency in the case of the heart. In some species, large auricles serve specific evolutionary purposes, such as enhanced hearing or thermoregulation.