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| Calcium is a
vital second |
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| messenger |
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| • | In the previous talk we concentrated on
Na+ and K+, as |
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| those are the
ions that are most important for the control of |
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| cell volume and
the membrane potential. |
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| • | But Ca2+ plays an equally
important role in practically |
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| every cell type. |
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| • | Ca2+ controls secretion, cell
movement, muscular |
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| contraction, cell
differentiation, ciliary beating, and so on. |
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| • | Important in both excitable and
non-excitable cells. |
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