Chapter 9

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Rey

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  • Heart is made of cardiac muscle
  • Theres three blood vessels called Arteries, Veins, and Capillaries
  • Arteries transport oxygenated blood
  • Veins transport deoxygenated blood
  • Capillaries are divisions of arteries that become veins
  • The left side of the heart transports oxygenated blood to the whole body
  • The right side of the heart transports deoxygenated blood to the lungs
  • the Aorta is the vessel that transports oxygenated blood to the whole body
  • Double circulatory system transports blood around the body twice
  • Single circulatory system transport blood only once around the body
  • Pulmonary artery carries deoxygenated blood
  • Pulmonary vein carries oxygenated blood
  • Vena cava is a vein
  • Septum is a cartilage that seperates the left and right side of the heart
  • Theres four chambers in the heart
  • The chambers have one Atria and Ventricles on each side
  • Blood is 55% plasma and 45% cells
  • The vessels that lead to the lungs are called pulmonary
  • The vessels that lead to the body are called systemic
  • Deoxygenated blood is impure
  • Oxygenated blood is pure
  • The blood system is also known as the circulatory system
  • Cardiologist is the doctor for heart
  • The left side of the heart is thicker as the left side has to give blood to the whole body, which makes it stronger
  • Coronary arteries are the arteries that provide the muscle of the heart with blood (oxygen and nutrients)
  • These nutrients give the heart the energy to contract and relax
  • Coronary heart disease short form is CHD
  • CHD is a disease that happens when cholesterol deposits are in the arteries.
  • CHD happens due to smoking, unbalanced diet, lack of exercise, genes, age, and stress
  • Prevention of CHD can be done by avoiding smoking, balanced diet, exercise, and managing stress levels
  • Heartbeat average is 60-75
  • Perfect heartbeat is 72 times
  • One heartbeat produces a 'Lub-dub' sound
  • Valves between the atria and ventricles are called atriventricular
  • Right side atrioventricular is called tricuspid valve
  • Left side atrioventricular is called bicuspid or mitral valve
  • The cells in blood consist of RBC and WBC (+Plalets but they are fragments, not cells)
  • Renal is for kidney and Hepatic is for liver
  • RBC contains haemoglobin which is a protein
  • RBC has no nucleus, no mitochondria, and no ribosomes.