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Calcium channel

Calcium channel

(Science: physiology) a membrane channel that is specific for calcium. It is a voltage-dependent cell membrane glycoproteins selectively permeable to calcium ions. They are categorised as l, t, n, or p types based on the activation and inactivation kinetics, ion specificity, and sensitivity to drugs and toxins.


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Re: SA node

... occur during the cycle are brought about by the changes in movement of Calcium and Potassium ions (and to a lesser degree, Sodium) across the membrane through ion channels, which at different times open and close during the action potential. As a channel ...

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by jonjominns
Tue Sep 21, 2010 4:42 pm
 
Forum: Human Biology
Topic: SA node
Replies: 3
Views: 4459

Biology Experts, Help!

... monitor patients' blood pressure when they are receiving verapamil (a calcium channel blocker). Why? Any help is appreciated. I understand if your too busy. Thanks in advance!

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by SuGrad
Wed Jun 10, 2009 4:11 am
 
Forum: Human Biology
Topic: Biology Experts, Help!
Replies: 5
Views: 9644

A question on dialysis tubing...help appreciated.

... transport of ions across dialysis tubing; that is, sodium, potassium, calcium, sulfate, carbonate—anything small like that can freely cross a dialysis ... more chemical—does it bind to the receptor, or the ion-selective channel. And then there’s the issue of active transport (which only biological ...

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by blcr11
Mon Jul 23, 2007 4:27 pm
 
Forum: Cell Biology
Topic: A question on dialysis tubing...help appreciated.
Replies: 1
Views: 12307

The Fiber Disease

... and flame me for being redundant but ...... . hey sky heres your ION channel... . . . . Direct Imaging of Molecular Transport Through Skin http://www.nature.com/jid/journal/v104/n1/abs/5611027a.html ... C. C. and Chou, T. C., 2002, “Development of a Solid-State Thick Film Calcium Ion- Selective ...

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by Nadas Moksha
Wed Dec 06, 2006 5:20 pm
 
Forum: Human Biology
Topic: The Fiber Disease
Replies: 7403
Views: 5425905

The Fiber Disease

... microtubule-motor proteins. PMID: 10839969 2002 - Endoplasmic reticulum calcium release is modulated by actin polymerization. PMID: 12358800 2000 - Actin filament disruption inhibits L-type Ca(2+) channel current in cultured vascular smooth muscle cells. PMID: 10913014 2000 ...

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by Skytroll
Mon Jul 10, 2006 5:53 am
 
Forum: Human Biology
Topic: The Fiber Disease
Replies: 7403
Views: 5425905
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