Write differences between atria (auricle) and ventricles.

Auricle

1. Auricle refers to a structure of the atrium or the upper chambers of the heart, resembling an earlobe.
2. In humans, this is the wrinkled, flap-shape structure of the atrium.
3. Less muscular or consists of a thin wall.
4. Helps to collect the blood from the body.

Ventricle

1. Ventricle refers to the two lower chambers of the heart.
2. Humans have two ventricles as the lower chambers of the heart.
3. More muscular than the auricle.
4. Pump blood to the corresponding parts of the body.