Cardiovascular system

• Oxygenated blood then returns to the left side of the heart through pulmonary veins.
• Blood flows from the right side to the lungs where it picks up oxygen.
• The right atrium receives deoxygenated blood from the body, while the left atrium receives oxygenated blood from the lungs.
• The heart is divided into four chambers, two atria (right and left) and two ventricles (right and left).
• The heart is divided into four chambers, two atria (upper) and two ventricles (lower).
• Semilunar valves prevent backflow between the ventricles and arteries.
• Deoxygenated blood is pumped into the right ventricle by the right atrium, which pumps it out to the lungs via the pulmonary artery.
• The superior vena cava carries deoxygenated blood from the upper half of the body to the right atrium.
• Oxygenated blood enters the left atrium from the lungs, then moves on to the left ventricle, which pumps it out to the rest of the body via the aorta.
• Semilunar valves prevent backflow between the ventricles and arteries during relaxation.
• The heart has four valves that control the flow of blood within the heart.
• The heart pumps blood throughout the circulatory system.
• The heart has four chambers - two atria and two ventricles.
• Oxygenated blood returns to the left atrium through the pulmonary vein, then passes through the bicuspid valve into the left ventricle.
• The left ventricle contracts, forcing blood through the aortic semilunar valve into the aorta.
• The left ventricle contracts, pushing blood through the aortic semilunar valve into the aorta.
• Blood vessels include veins, arteries, capillaries, and lymphatic vessels.
• Veins carry oxygen-poor blood away from tissues towards the heart.
• Arteries carry oxygen-rich blood away from the heart towards tissues.
• Atrial septum separates the right and left atria.
• Ventricular septum separates the right and left ventricles.
• Valves are flaps of tissue that open and close to allow or restrict blood flow.
• Blood flows through the heart in one direction only due to the presence of valves.
• Blood flows through the heart in one direction only due to the presence of these valves.
• Valves are made up of flaps called leaflets or cusps, attached to tendinous cords (chordae tendineae) anchored to papillary muscles.
• Blood returning from the lungs with oxygen flows into the left atrium through the pulmonary veins.
• Deoxygenated blood is pumped by the right ventricle into the pulmonary trunk (pulmonary artery) and travels to the lungs where oxygenation occurs.
• Deoxygenated blood from the body enters the right atrium via superior vena cava or inferior vena cava, passing through the tricuspid valve into the right ventricle.
• The tricuspid valve separates the right atrium from the right ventricle.
• Deoxygenated blood enters the right atrium from the vena cavae.
• Blood flows through the tricuspid valve into the right ventricle.
• Veins carry deoxygenated blood from tissues back to the heart.
• Blood flows from the right side of the heart to the lungs where it picks up oxygen and releases carbon dioxide.
• There are four main components of blood
• Plasma is the liquid component that carries nutrients, hormones, waste products, and gases throughout the body
• White Blood Cells (WBC) fight infection by engulfing bacteria or viruses
• Red Blood Cells (RBC) contain hemoglobin which binds with oxygen and transports it to cells
• Red Blood Cells (RBC) contain hemoglobin which binds with oxygen molecules and transports them to cells
• White Blood Cells (WBC) defend against infection by engulfing bacteria or viruses
• Platelets form clots when there's an injury to prevent excessive bleeding