Water/Hydration Flashcards
(49 cards)
Arguably the most essential nutrient
water
Restriction can lead to death in days
water
Slight dehydration decreases performance
water
5 functions of water?
-Provides cell structure •Serves as reactive medium •Provides for cooling •Assists in pH balance •Major constituent of blood volume
To control flow of water, body expends To control flow of water, body expends ____ _____ ______ from one compartment to another.
expends energy moving electrolytes
What can occur if fluid balance is disturbed?
e.g., vomiting), severe illness can develop quickly due to rapid fluid shifts.
Water Constitutes __-__ of body weight
55–60%
Types of body water
Intracellular (inside cells)
•Extracellular (outside cells)
type of water that is two-thirds of body water?
Intracellular (inside cells)
type of water that is one-third of body water?
•Lymph, blood plasma, etc.
Extracellular (outside cells)
•__% of a person’s weight (150 pound person contains 90 pounds of water)
60
what % water is in blood?
83
what % water is in muscle?
75
What are the 3 sources of water?
- 80% from ingested fluids
- <20% from ingested foods
- remainder formed during metabolism
What drinks are sources of water for ingested fluids?
- Milk, sports drinks, juices, other beverages
- Caffeinated drinks can count
- Bottled water (Is it the best?)
What ingested foods are a source of water?
•Fruits, vegetables, etc.
4 Major ways avenues for water loss?
- Urination
- Defecation
- Sweating
- Insensible perspiration
Major avenue of water loss during rest?
urination
Major avenue of water loss during exercise?
Sweating
Water intake < Water loss
Dehydration
Water intake = Water loss
Balance
Water intake > Water loss
Hyperhydration
Severity: Least
S and S: Muscle Cramping
Corrective actions: stretch muscle, moderate activity, fluids
Heat cramps
Severity: Moderate
S and S: Profuse sweating, cold/clammy, faintness, rapid pulse, hypotension
Corrective actions: Cease activity, rest in shade, lie down, consume fluids
Heat exhaustion
