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The mammalian heart

Hi can anybody help me with this question please? i hate these types of questions.

Explain how the structure of the mammalian heart is related to its function.

Thanks
Reply 1
Avatar for j00ni
j00ni
9
dual chamber due to dual circulation is probably what they are looking for :wink:
Reply 2
Avatar for silo
silo
if its a 8mk Q u will need more than that.
think about how it is composed of different parts and has different thicknessess.eg left atrium is 8mm thick muscle to force bld all over body. also it has valves (bicuspid/tricuspid)to stop backflow/ensure one directional flow.
the function of the two chambers is to seperate deoxy from oxygenated, which makes for a more efficient system.
it has cardiac arteries to supply the muscle walls.
large veins to return blood to ventricles from around body.
it has non-conductive tissue in the septum to stop the excitation wave reaching the ventricles. (this is passed on via the AV node).
it has a SA node to act as a pacemaker (initiate excitation wave).
it is myogenic.


hope this gets you on the right path, there is loads more but its best if you look it up. try passed papers
Reply 3
Avatar for WokSz
WokSz
17
Try www.medscape.net. - it requires a free registration but really does help.

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