exists and is an alternate of . Direct observation means looking at it with your own two eyes, feeling it with your fingers (or other body parts), directly hearing it with your ears or directly tasting it with your tongue. Indirect observation means not sensing the object of observation directly but by observing the effects it has on its surroundings.
The atrioventricular valve between the left atrium and the left ventricle is called the bicuspid valve (also known as the mitral valve), and the atrioventricular valve between the right atrium and the right ventricle is called the tricuspid valve.
1 Tricuspid Valve (between the right atrium and the right ventricle). 2  Pulmonary Valve* (semilunar valve between the right ventricle and the pulmonary artery). 3  Mitral Valve (between the left atrium and the left ventricle). Answer   There are two valves in your heart. Between the Right atrium and ventricle there lies an AV-valve (A=atrium) (V=ventricle) hence the name AV-valve. It's al â¦ so called like tricuspid valve...