The upper chambers of the heart are called auricles/atria and the lower chambers of the heart are called ventricles.
The valve between the left atrium and the left ventricle is called the Bicuspid valve/Mitral valve.
The valve between the right atrium and the right ventricle is called the Tricuspid valve.
The two valves dividing the upper and lower chambers of the human heart are the pulmonary valve and the aortic valve.
The nasal cavity and the upper and lower chambers of the heart are divided by a septum.
Septum means wall and the atrial septum is the dividing wall between the two atria, or upper chambers of the heart.
Some terminology first: The upper chambers = atria (singular atrium) The lower chambers = ventricles The atria are responsible for receiving blood: the right atrium receives deoxygenated blood from the body and the left atrium receives oxygenated blood from the lungs. The atria only pump this blood into the ventricles and therefore do not need particularly thick muscular walls. The ventricles on the other hand are responsible for pumping the blood received from the atria to the body. The right ventricle pumps the deoxygenated blood it receives from the right atrium out of the heart and into the lungs. On the other hand, the left ventricle is responsible for pumping the oxygenated blood received by the left atrium to the rest of the body. It is because of the this that the walls on the side of left ventricle are the thickest. The left ventricle requires "more muscle" than the right ventricle as the distance it has to pump the blood is far greater. So, SHORT ANSWER: The walls of the lower chambers/ventricles are thicker and more muscular than the walls of the upper chambers/atria because they have to pump blood out of the heart and to the body as opposed to the atria which only receive blood from the body and then pump into the ventricles.
Lower parts of the body vs. upper parts of the body, e.g. arms(upper), legs(lower).
The Names of the Four Heart Valves1. Tricuspid valve2. Pulmonary semilunar valve3. Mitral valve4. Aortic semilunar valvethis is for P.E class!!!!!!
The AV valves separate the upper and lower chambers of the heart. The bicuspid valve is on the left, and the tricuspid on the right.
There are 4 heart chambers. The two upper chambers are called atria while the two lower chambers are called ventricles. The valve separating the atria from the ventricles is called the atrioventricular valve. Then you would have your right and left atrioventricular valves.
The hearth valves only allow blood to flow one way.
Upper chambers of heart are the left and right atrium Lower are the left and right ventrical atrioventricular valves separate the two. Bicuspid (mitrial) valve separates the left atrium/ventrical and the tricuspid separates the right atrium/ventrical.
The lower chambers of the heart are the ventricles. In contrast, the upper chambers are the atria.
The walls of the upper chambers are thinner than those of the lower chambers. The upper chambers don't need to generate as much pumping force as the ventricles.
The heart has upper and lower chambers.
The ventricles are the lower chambers of the heart. The atria are the upper chambers.
The lower chambers of the heart have a different function than the upper chambers. The lower chambers pump the blood out of the heart into the body and lungs.
The upper heart valves are called atriums, and the lower heart valves are called ventricles.
The glottis is dividing line between the upper and lower airway
The heart is divided into four chambers. The two bottom heart chambers are called the ventricles. The upper chambers are the atrials.