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Author Topic:   Fine tuning/ programming
Pauline
Member (Idle past 3726 days)
Posts: 283
Joined: 07-07-2008


Message 1 of 2 (529593)
10-09-2009 7:56 PM


Hello. I am writing on this board for the first time. I've read a few discussions on here and they were very interesting.
I was reading through some topics today and thought this would be a good discussion. So, here is some background to what I'm about to ask.
The human heart and heartbeat. Point A in the heart (Sino atrial node)has leaky sodium channels which have a continuous Na+ influx which causes systematic electical impulse generation. Electrical impulse form point A travels to Point B (Atrioventricular Node).Here, there is a TIME LAG of a few millseconds between travel from point A to B, because of a LACK OF STRUCTURAL connection b/w A and B. The action potential takes 2 routes: it spreads through the entire right atrium and then hits the atrioventricular node (point B)(which is strategically located at the bottom of the right atrium)and also travels into the left atrium which is right next door. Meanwhile, the atria (upper chambers of the heart) have translated the message they've just received and contract. Now, from point B to, the impulse travels to point C (purkinje fibres). From purkinje fibres to Ventricular myocardium. And boom, ventricles contract.
So, if there were no time lag (say by there being a structural connection b/w the two nodes: SA and AV)in impulse transmision, all parts of the heart would receive the message of the impulse at the same time, translate it and the same time and contract almost at the same time. But someone was smart enough to program the heart not to do this.
My question to the evolutionists is twofold:
1. How do you explain such an intricate complex programming system?
2. If you do not consider this mechanism to be'programmed by someone', why not?
(I've tried to explain an example of programming (heartbeat) in as simple a way I could. Sorry, if that did not make sense. I'll try to explain it again if thats the case.)
Edited by Dr. Sing, : Typos

AdminNosy
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Message 2 of 2 (529605)
10-09-2009 8:35 PM


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