The lower (ventricles) are muscular and the valves can seal both openings. The upper (atria) are significantly weaker and are not sealed at the venous portal. Both left sides are thicker and stronger than the right (systemic pressure is much higher than pulmonary).
the size of the right atrium is smaller that the left atrium.
The left atrium empties into the left ventricle. The left atrium and left ventricle are separated by the left AV valve, or mitral valve.
Right Atrium , Left Atrium , Right Ventricle , Left Ventricle
the left atrium
the left atrium...it pumps blood thereThe pulmonary vein carries oxygenated blood from the lungs to the left atrium of the heart.
The two upper chambers are called the atria. A single atria is an atrium.
The four chambers are; Left atrium Right atrium Left Ventricle Right Ventricle The two upper chambers are called atria (singular: atrium) and the two lower chambers are called ventricles. There are four chambers of the heart - the right atrium, left atrium, right ventricle and left ventricle.
Mitral valve stenosis refers to a condition in the heart in which one of the valve openings has become narrow and restricts the flow of blood from the upper left chamber (left atrium) to the lower left chamber (left ventricle).
The left atrium carries oxygenated blood.
well you have two atria the right atrium and left atrium but i think the right atrium has deoxygenated blood and the left atrium has oxygenated blood.
As veins flow TOWARDS the heart, the PULMONARY VEINS are the only veins that carry oxygenated blood from the lungs to the LEFT ATRIUM.