circulatory system

• The heart has four chambers: two atria and two ventricles.
• Blood flows from the right side to the left side of the heart through the pulmonary valve, which separates the right ventricle from the pulmonary artery.
• Blood is pumped into the lungs by the right ventricle.
• The circulatory system consists of the heart, blood, and blood vessels
• The purpose of the circulatory system is to transport oxygen, carbon dioxide, and nutrients around the body
• Kidneys filter your blood
• The circulatory system regulates your body temp
• The circulatory system transports disease fighters (white blood cells)
• Lungs are the pulmonary circuit
• Capillaries in body tissue are the systemic circuit
• Cardiac muscles + nerves = contraction
• Heart pumps oxygenated blood to the body through the left side
• Heart pumps deoxygenated blood to the lungs through the right side
• In our blood, red blood cells carry O2 via red protein called haemoglobin
• In our blood the white blood cells are infection fighters
• Platelets are involved in scabbing and blood clotting
• Plasma is a liquid that carries blood cells
• Plasma carries O2 to lungs in the form of bicarbonate
• Arteries carry blood away from the heart (high pressure, loads of blood)
• Veins carry blood towards the heart (low pressure) and have valves to prevent backflow (fair bit of blood)
• Capillaries connect arteries and veins to form a network of blood vessels throughout the circulatory system
• Capillaries take O2 in and CO2 out through diffusion (they are tiny - 1 cell thick - and have a lil' bit of blood, like a paper cut)
• Coronary heart disease is when blood vessels are blocked by fat which prevents blood from entering the heart and can cause a heart attack
• The heart has 4 chambers
• Valves keep blood from flowing backward in the heart and blood vessels
• Of the 4 chambers, there is the left atrium, left ventricle, right ventricle, and right atrium
• Blood flows through the right atrium to the right ventricle, and then around the body to oxygenate cells
• Deoxygenated blood from the body then enters the left atrium, then the left ventricle then back into the right atrium once oxygenated
• The pulmonary artery carries blood from the right ventricle to the lungs
• The pulmonary vein carries blood from the lungs back to the left atrium
• The circulatory system transports nutrients from food to all organs and tissues
• Bone marrow produces blood cells and then releases them into the bloodstream when mature