Hydration Quiz #2

___ is a condition caused by low sodium due to overhydration.

• Hyponatremia

• Hyperkalemia

• Hypoglycemia

• Hypernatremia

Answer explanation

1. Excess water dilutes sodium levels, leading to a dangerous electrolyte imbalance.

___ is the organ most responsible for fluid regulation.

• Kidneys

• Liver

• Lungs

• Heart

Answer explanation

Kidneys filter blood and regulate fluid and electrolyte balance.

Dehydration can cause muscle cramps.

• True

• False

Answer explanation

Electrolyte imbalance and fluid loss can lead to cramping, especially during exercise 

Coffee and tea dehydrate you.

• True

• False

Answer explanation

In moderate amounts, coffee and tea contribute to hydration despite their caffeine content 

Which organ is most affected by dehydration?

• Liver

• Brain

• Skin

• Heart

Answer explanation

Dehydration can impair brain function, causing headaches, confusion, and fatigue

What happens to blood when you're dehydrated?

• It thickens

• It thins

• It turns blue

• It speeds up

Answer explanation

Dehydration reduces plasma volume, making blood more concentrated

What’s the danger of chronic dehydration?

• Improved memory

• Kidney damage

• Better skin

• Increased appetite

Answer explanation

Long-term dehydration can impair kidney function and lead to stones

Why does blood thicken during dehydration?

• Increased plasma volume

• Reduced plasma volume

• Increased red blood cells

• Increased oxygen levels

Which electrolyte is most commonly lost through sweat?

• Calcium

• Potassium

• Magnesium

• Sodium