Best Answer: It extracts the chlorophyll so that when you test for strach with iodine the colour change is clear. when u boil a leaf in alcohol, it's chlorophyll dissolves in alcohol, leaving the leaf colourless. now when u test for starch by adding Iodine the colour change in clear. BlueAsh Â· 7 years ago.
Left atrioventricular valve (Mitral valve). The mitral valve is located within the heart. It lies between the left atrium and the left ventricle. The mitral valve opens to increased pressure as the left atrium fills with blood.Blood flows through into the left ventricle as the heart expands (diastole).It then closes as the heart contracts (systole) and forces blood into the aorta.t lies between the left atrium and the left ventricle. The mitral valve opens to increased pressure as the left atrium fills with blood. Blood flows through into the left ventricle as the heart expands (diastole). It then closes as the heart contracts (systole) and forces blood into the aorta.
The mitral valve is also called the bicuspid valve and the left atrioventricular valve. As the name bicuspid valve may suggest, the mitral valve is considered to have two primary leaflets: the anterior and posterior leaflets. The anterior leaflet has also been called the septal, medial, or aortic leaflet, while the posterior leaflet is also referred to as the lateral, marginal, or mural leaflet.