Ion Channels Flashcards
1
Q
What are 3 functional properties of ion channels?
A
Selection, gating, conduction
2
Q
What are the 3 families of ion channels?
A
Ligand gated, gap junctions and voltage gated
3
Q
Where are muscarinic receptors found?
A
heart
4
Q
Where are nicotinic receptors found?
A
Muscle
5
Q
What acts as a voltage sensor in domain 4?
A
Arginines
6
Q
What does ion channel selectivity depend on?
A
The size of the partially hydrated ion
7
Q
What is channel gating controlled by?
A
Ligand gated, protein phosphorylation, changes in membrane voltage and stretch or pressure changes
8
Q
True or false: gates open and close in all or none fashion?
A
True
