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Calcium channels

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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Pls. I need help with my hw

... C) During the fed state D) During periods of hyperglycemia How are calcium ions transported into the cell? A) By facilitated diffusion B) By ... C) By Na+ Ca+ antiports D) By simple diffusion through Calcium ion channels when their gates open Which of the following is TRUE about active ...

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by mslazy
Sat Oct 09, 2010 8:56 pm
 
Forum: Physiology
Topic: Pls. I need help with my hw
Replies: 1
Views: 11180

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: 4468

Biology Experts, Help!

... body. No water -> weight loss. No iron etc -> anemia. 4. blocking calcium channels inhibits muscle contraction. If the patient is too sensitive to the drug or the dose ...

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by MrMistery
Sat Jun 13, 2009 11:29 am
 
Forum: Human Biology
Topic: Biology Experts, Help!
Replies: 5
Views: 9655

Comparing Cellular Respiration & Fermentation

... some evidence has surfaced recently that it might be leaky ryanodine calcium channels. Sure, it's still hard to tell for sure right now, but fun to debate though....

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by MrMistery
Thu Oct 02, 2008 2:49 am
 
Forum: Cell Biology
Topic: Comparing Cellular Respiration & Fermentation
Replies: 5
Views: 7334

Re: On Calcium mediated exocytosis and the synaptotogmin fam

... potential arrives. This is done by the opening of voltage mediated calcium channels, which cause an influx of calcium at that point. The calcium inactivates the protein ...

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by Revenged
Mon Jul 09, 2007 10:40 am
 
Forum: Cell Biology
Topic: On Calcium mediated exocytosis and the synaptotogmin family
Replies: 3
Views: 3821
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