English Diver Educational Podcast - Blood

QUIZWhat percentage of blood is made up of plasma?A) 45%B) 55%C) 65%D) 75%How many red blood cells are found in a single drop of blood?A) 250,000B) 2.5 millionC) 250 millionD) 25 billionWhat is the primary function of red blood cells?A) Transporting oxygenB) Fighting infectionsC) Carrying nutrientsD) Regulating temperatureHow many hemoglobin molecules are found in one red blood cell?A) 25 millionB) 250 millionC) 2.5 billionD) 25 billionHow often is the heart expected to beat over an average lifetime of 70 years?A) 2.5 million timesB) 25 million timesC) 250 million timesD) 2.5 billion timesWhich blood vessels carry oxygen-rich blood away from the heart?A) VeinsB) CapillariesC) ArteriesD) LymphaticsWhat is the role of white blood cells?A) Transporting nutrientsB) Removing wasteC) Fighting infectionsD) Delivering hormonesVOCABULARY plasma: the yellowish fluid in blood that carries cells and nutrients. red blood cells: the cells responsible for transporting oxygen throughout the body. white blood cells: cells that play a key role in the immune system by fighting infections. platelets: small blood components that help in blood clotting. hemoglobin: a protein in red blood cells that binds to oxygen for transport. oxygen transport: the process of delivering oxygen to body cells through red blood cells. immune system: the body's defense system against infections and diseases. capillaries: tiny blood vessels where the exchange of oxygen, nutrients, and waste occurs. arteries: blood vessels that carry oxygen-rich blood from the heart to the rest of the body. veins: blood vessels that carry oxygen-poor blood back to the heart.Приходи на обучение подробно здесьANSWERSB) 55%C) 250 millionA) Transporting oxygenB) 250 millionD) 2.5 billion timesC) ArteriesC) Fighting infections