What does an artery do?
It transports oxygenated blood away from the heart to tissues .
What do veins do?
They collect deoxygenated blood from tissues and organs and return it to the heart where it is pumped to the lungs to gain oxygen.
What do capillaries do?
They are the main sites for exchanges of gases, waste products and nutrients between the blood and the body’s cells
How is the structure of an artery related to its function?
Its structure is muscular, elastic and thick to withstand the pressure of the blood
How is a red blood cell adapted to its function?
It is biconcave, has no nucleus, has a thin membrane and contains haemoglobin.
How does the red blood cell’s shape help to absorb more oxygen?
The disc biconcave gives the cell more surface area
What is the red blood cell’s need for no nucleus?
It allows more space to carry oxygen
What does the haemoglobin do in the red blood cell?
It allows the cell to carry oxygen as it binds to the oxygen to create oxyhaemoglobin allowing the oxygens transport.
What do white blood cells do?
They protect the body from infection
What are blood platelets?
They are small bits of cells which don’t have nucleuses. They help to form clots (a scab) when there is a wound to stop loss of too much blood and prevents infections.
What is plasma? And what substances does it …?
Plasma is a liquid that carries substances around the body. These include: CO2 (waste product from respiration), waste products such as urea abs nutrients that are needed for the body (such as glucose)
How many chambers are there in the heart?
4
Name the chambers in the heart
Left ventricle, left atrium, right ventricle, right atrium
How does blood flow through the body (starting with deoxygenated blood)?
Deoxygenated blood goes into the right atrium via the vena cava
It then goes into the right ventricle
The right ventricle them pumps it out of the heart to the lungs
The now oxygenated blood goes into the the left atrium via the pulmonary artery
It then goes into the left ventricle where it is pumped through the aorta into the rest of the body
What is transpiration?
The diffusion of water vapour out of stomata.
What does the guard cell do?
It controls what goes in and out of the leaf
Where are most of the stomata found in a plant?
On the bottom of a leaf
What is a stent?
A tiny metal cage placed in an artery allowing blood to flow through. It widens it as before very little blood flow would be allowed due to cholesterol (fatty foods)
What does the xylem do?
It transports water and mineral in a plant
What does the phloem do?
It transports food (sugar and amino acids)
How is the xylem adapted?
It has hollow walls to allow for more transport
How is the phloem adapted to its function?
It is structured with sieve tubes and companion cell to allow for translocation
What is translocation?
It is the transport of dissolved substances across the plant
What does the rib cage do?
Protect our lungs
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Respiration21
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Acids and Alkaline8
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Naming Salts4
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Sound and the Ear26
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Light14
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Lungs / photosynthesis/ gaseous exchange42
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Earth and the Universe16
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Chemical reactions22
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Osmosis, Diffusion, Active transport and cells9
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B3 - Digestion & Food37
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Energy stores, transfers and formula12
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Heat transfers and formulas9
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Chemistry Y956
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C2 - Periodic Table40
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B2 - Cell Division22
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B429
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P426
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C3- Structure and bonding38
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P312
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B5 - Infection and Response42
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B6 - Vaccinations and Illnesses31
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P6- Particles1
