Calcium channel

A Calcium channel is an ion channel which displays selective permeabiltiy to calcium ions. It is sometimes synonymous as voltage-dependent calcium channel, although there are also ligand-gated calcium channels.

Comparison tables
The following tables explain gating, gene, location and function of different types of calcium channels, both voltage and ligand-gated.

Ligand-gated

 * the receptor-operated calcium channels (in vasoconstriction)
 * P2X receptor

Pharmacology
Calcium channel blockers are used to treat hypertension.