Definition: Hyperkalemia means too much potassium (K⁺) in the blood — typically > 5.0 mEq/L.
Potassium is normally high inside cells, but low in the blood.
When it leaks into the bloodstream or is not excreted properly, it disturbs the electrical activity of the heart.
Aldosterone is secreted when a drop in extracellular sodium occurs. This hormone’s effect on the kidneys causes the kidneys to retain sodium and return it to the blood.
The correct answer is ✅ Sodium levels are increased.
Aldosterone is a hormone produced by the adrenal cortex (part of the adrenal glands).
Its main function is to regulate electrolyte and fluid balance by acting on the kidneys.
When aldosterone is secreted:
The kidneys reabsorb more sodium (Na⁺) back into the blood.
Water follows sodium, which helps raise blood volume and pressure.
At the same time, potassium (K⁺) is excreted in the urine.
Aldosterone is secreted when a drop in extracellular sodium occurs. This hormone’s effect on the kidneys causes the kidneys to retain sodium and return it to the blood.
The dermis (dermal layer) is the middle layer of the skin — located beneath the epidermis and above the subcutaneous (fat) layer.
It is made mostly of connective tissue, which contains collagen and elastin fibers.
Fibroblast cells in the dermis produce collagen, giving the skin strength, elasticity, and flexibility.