Marathon Runner Water Balance Flashcard

Front

What is the definition of hypotonic solution?

Back

A hypotonic solution has a lower concentration of solutes compared to the inside of a cell, causing the cell to swell as water enters.

Front

What happens to cells in a hypertonic solution?

Back

Cells in a hypertonic solution lose water and shrink due to a higher concentration of solutes outside the cell.

Front

What is isotonic solution?

Back

An isotonic solution has an equal concentration of solutes inside and outside the cell, resulting in no net movement of water.

Front

What are normal plasma sodium levels?

Back

Normal plasma sodium levels range from 137 to 142 mEq/L.

Front

What does it mean if plasma sodium levels are low?

Back

Low plasma sodium levels (below 137 mEq/L) can indicate a condition called hyponatremia, which can lead to swelling of cells.

Front

What is the relationship between water consumption and cell condition in marathon runners?

Back

Excessive water consumption can lead to hyponatremia, causing cells to swell and potentially leading to serious health issues.

Front

How do hypotonic cells appear?

Back

Hypotonic cells appear swollen or enlarged due to the influx of water.

Front

What mnemonic can help remember the effect of hypotonic solutions on cells?

Back

Hypotonic looks like hippo; hippos are big and swollen, just like hypotonic cells.

Front

What is the effect of dehydration on plasma sodium levels?

Back

Dehydration typically raises plasma sodium levels, making them higher than the normal range.

Front

What is the significance of maintaining water balance in athletes?

Back

Maintaining water balance is crucial for optimal performance, preventing fatigue, and avoiding conditions like hyponatremia.