6.2 Control of Potassium Flashcards
1
Q
Where is K+ mainly found?
A
Skeletal muscle cells
2
Q
Name 3 hormones which increase K+ intake into cells
A
Aldosterone
Insulin
Catecholamines
3
Q
How does insulin increase K+ uptake into cells?
A
Increases Na-K-ATPase
4
Q
When is K+ moved out of cells?
A
Exercise
Cell lysis
Low ECF [K+]
Acidosis
5
Q
What cells secrete K+?
A
Principle cells
6
Q
Which cells absorb K+?
A
Intercalated cells
7
Q
What symptoms are experienced with hyperkalaemia?
A
Arrhythmias
Neuromuscular dysfunction
Acidosis
8
Q
What symptoms are experienced with hypokalaemia?
A
Arrhythmias
Paralytic ileus
Muscle weakness
Kidney unresponsive to ADH
