Mod 2- Potassium Flashcards
(16 cards)
What is the main positive ion (cation) inside cells?
Potassium
Which ion is the main positive ion outside cells, working opposite to potassium?
Sodium
What is essential for muscle contraction, nerve signal transmission, and fluid/electrolyte balance?
The movement of sodium and potassium in and out of cells
Which types of muscle contraction depend on sodium and potassium movement?
Smooth, skeletal, and heart (cardiac) muscles
Name two key physiological processes involving potassium and sodium movement.
Muscle contraction and nerve signal transmission
What is the Adequate Intake (AI) of potassium for men?
3,800 mg/day
What is the Adequate Intake (AI) of potassium for women?
2,800 mg/day
Is there an established Upper Level (UL) for potassium intake?
No, an Upper Level (UL) has not been established.
Name four top food sources of potassium.
Fruits and vegetables, meat, milk and dairy, grains and legumes
How many servings of fruits and vegetables per day help meet potassium needs?
5–7 servings per day
Name four common causes of potassium deficiency.
Low dietary intake, vomiting or diarrhoea, eating disorders, use of diuretics or laxative abuse
What are some early symptoms of potassium deficiency?
Increased blood pressure, salt sensitivity, kidney stones, increased bone turnover
What are some symptoms of ongoing or severe potassium deficiency?
Irregular heartbeat, muscle weakness, glucose intolerance
Can potassium toxicity occur from eating too many potassium-rich foods?
No, potassium toxicity does not happen from eating too many potassium-rich foods.
What are common causes of potassium toxicity?
Taking too many supplements or certain diseases or medical treatments.
Name symptoms of potassium toxicity.
Muscle weakness, vomiting, and if potassium is injected into a vein too quickly, it can stop the heart.
