Fechar
B5
Why do some animals, such as amoeba, not need a blood circulatory system?
Why would many animals need a blood circulatory system?
What type of circulatory system do insects have?
Why do insects have an open circulatory system?
What type of circulatory system do humans have?
What happens in closed circulatory systems?
What are the features of a single circulatory system?
What is an example of an animal that has a single circulatory system?
How many chambers does a double circulatory system heart have?
What are the features of a double circulatory system?
What are the features of the chambers in a double circulatory system?
What does the heart need in order to release energy through respiration?
What does the coronary artery do?
What does the pulmonary vein do?
What does the aorta do?
What does the vena cava do?
What does the pulmonary artery do?
What happens during each heart beat?
Who was Galen and what did he believe?
What did William Harvey discover?
What is a pulse?
What is the heart beat controlled by?
How do the pacemaker cells work?
During exercise, why do your muscles demand more energy?
What do you do if the pacemaker fails?
What does the sinoatrial node (SAN) do?
What does the atrioventricular node (AVN) do?
How can nerves regulate the heart beat?
What hormones also alter the heart rate?
What are the two methods are used to monitor the heart?
B5
Why does an irregular heartbeat occur?
Why could blood be allowed to flow backwards and reduce blood pressure?
What causes a coronary heart attack or heart disease?
What is bypass surgery?
What is the consequence of being born with a hole in the heart?
What are the features of the heart of a foetus?
How can a severely damaged heart be fixed?
Name three advantages of of pacemakers and heart valves.
What is the disadvantage of pacemakers and heart valves?
What are the advantages of heart transplants?
Name three disadvantages of heart transplants.
Where does blood clot?
What happens when you have a cut?
What types of drugs can be used to reduce clotting inside blood vessels?
What is haemophilia?
What are the four different blood groups?
What are the blood groups determined by?
What is another marker of blood type?
How much blood is taken from a donors arm?
What will happen if the donors blood group is not matched to the recipients?
Why do people give blood?
What makes red blood cells dump if they come in contact with the corresponding antigen?
What types of agglutinins do different blood types have?
What is another word for blood clumping?
