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B4 organising Part1

AQA GCSE B4 Organising animals and plants HEART

QuestionAnswer
Order these to show the cycle of the blood in the body: left side of the heart;right side; lungs; rest of body left;body;right;lungs;left…
What is the name of the top 2 chambers? ATRIUM
What is the name of the bottom 2 chambers? VENTRICLE
On a diagram of the hear, where is the left side? On the right of the diagram! :D
What is the name of the two small chambers at the top of the heart? Atria
Why has the left ventricle a thicker muscle than the right ventricle? because the left ventricle needs to push the blood all the way around the body, whereas the right wentricle pushes the blood to the lungs only
What is the name of a blood vessel that carries blood away from the heart? ARTERY
What is the name of a blood vessel that carries blood back to the heart? VEIN
What is the name of the blood vessels which are only one cell thick? CAPILLARY
Give one difference between an artery and a vein. ARTERY HAVE A THICKER WALL. Veins have got valves
Why is there valves in veins or in the heart? to prevent blood from flowing back
What happens when the blood vessel around the heart are thickening? LESS BLOOD, LESS OXYGEN, MUSCLE DOES NOT WORK, HEART FAILURE
Give 2 things that make you more at risk to get Heart diseases. Eat too much FAT, SMOKING, DRINKING or too little EXERCISE
If an artery is blocked, what could you do to unblock it? in people at risk but with little blockage yet, doctors give drugs called statins; in bad cases: Put in a stent; in severe cases, you can do by-pass surgery
What is the advantages and disadvantages of using biological heart valves to replace leaky valves? No medication needed but they only last 12-15 years
What is the advantages and disadvantages of using mechanical heart valves to replace leaky valves? They last a very long time but you will need medicine to prevent the blood from clotting
What is a pacemaker? It is a device that stimulates the heart by sending regular electrical signal to the nodes in the heart; the pacemaker helps the heart beat at a normal rythm
Which type of blood vessel carries blood away from the heart artery
Which type of blood vessel connects artery to vein capillary
Which type of blood vessel carries blood back into the heart vein
Which type of blood vessel carries blood to and from cells capillary
Which type of blood vessel carries blood at high pressure artery
Which type of blood vessel carries oxygen-rich blood from heart to the body artery
Which type of blood vessel has a thin wall made of single layer of cells capillary
Which type of blood vessel has thin walls and contains valves veins
Which type of blood vessel carries oxygen-poor blood from cells to the heart veins
Which type of blood vessel carries blood at low pressure veins
Which type of blood vessel has thick elastic and muscular walls artery
Which type of blood vessel has thin walls so that substances can be exchanged between blood and cells capillary
Why does blood returning to the heart from the body cells contains a higher percentage of CO2 than when it left the heart? CO2 is produced by cells during respiration; CO2 diffuses from cells into blood and CO2 will dissolves in the plasma
What do red blood cells (aka RBC) do as they flow through capillaries around the lungs? the RBC pick up Oxygen
Why does blood returning to the heart from the lungs contains a higher percentage of O2 than when it left the heart? Because the Oxygen will have diffused from the alveoli into the blood stream; Oxygen will then attach to the Red Blood Cell
How does blood flow through arteries? fast and high pressure
How does blood flow through veins? slow and at low pressure
What type of blood vessels does blood flow through organs’cells? capillary
What is the job of valves in veins and in the heart? to prevent the blood from flowing backwards
CHALLENGE: Explain why heart rate and breathing rate increase when you exercise when you exercise, your muscles need more energy, so they need more sugar and more oxygen, so they need more blood (did you use “more” every time?)
Why is it important for a red blood cell to be small and flexible? so that the RBC can pass through the tiny capillary
What feature of a vein prevent the blood from flowing backwards? Valve
What feature of an artery helps it withstand pressure? Thick walls
Explain how the oxygen goes from the capillary into a cell the oxygen will diffuse from the capillary into the cell
What is the name of the blood vessel that takes away blood from the heart to the lungs? Pulmonary artery - note that this artery carries DEOXYGENATED blood
What is the name of the blood vessel that takes blood from the lungs to the left side of the heart? Pulmonary vein - note that this vein carries OXYGENATED blood
What is the name of the blood vessel that supplies blood to the heart? Coronary artery
What is the name of the blood vessel that takes blood from the body to the right side of the heart? Vena Cava
What is the name of the blood vessel that takes blood from the left side of the heart to the rest of the body? Aorta
What is a lumen? The diameter of a blood vessel
Created by: ursulinebio