Qualification > Sciences
Biolgy paper 1 help!
12345abc:
ok so u know these questions about graphs of heartbeat in paper 1,they give the graph then ask where valves close and the pulse rate...plz help...i m feeling like i know nothing :'( :'( :'(
goin4dakill:
--- Quote from: 12345abc on June 07, 2009, 05:11:59 pm ---ok so u know these questions about graphs of heartbeat in paper 1,they give the graph then ask where valves close and the pulse rate...plz help...i m feeling like i know nothing :'( :'( :'(
--- End quote ---
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Ok, well.. ive never seen something like that before..but if i use my knowledge.. I would think that at every heart beat- the flow of blood increases--and therefore the pressure increases (By the way whats the variables?-like whats on the x and y axis) anyway, and valves stop blood from backflowing..so therfore everytime theres a valve, there is alot large pressure, because it propels the blood upwards and out of the heart- instead of letting it trickle back into the atrium
12345abc:
pressure is on the y axis and time on x axis
goin4dakill:
--- Quote from: 12345abc on June 07, 2009, 05:39:55 pm ---pressure is on the y axis and time on x axis
--- End quote ---
Yeah so thats right? Im sorry, u want me to explain it again? did u get it..?
dan90:
hey am a noob and i'd like to get A*s ;D
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