Water and Hydration
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36 Terms
Which of the following is the primary function of potassium?
Acts as principal intracellular electrolyte
The definition of a hypertonic solution is…
There is more salt in the solution than inside the cell
What is the major intracellular cation?
Potassium
Which of the following is a feature of water and nutrition?
Water intoxication is rare but can result in death
Whose body contains more water by percentage?
male's body
How much blood does an average person have?
5 liters
Water cannot pass through the cell membrane
False
On average, for how long can a person survive without water?
7 days
What is the force that moves water into a space where a solute is more concentrated?
Osmotic pressure
What is the term for the pressure that develops when two solutions of varying concentrations are separated by a membrane?
Osmotic pressure
What happens to cells placed in hypotonic solution?
the cells swell as water rushes in
If cells are placed in a hypotonic solution, what happens to them?
The cells swell, as the water is pulled into them
The male body contains approximately how much water?
60%-65%
Free water molecules can pass through the cell membrane during osmosis.
True
The female body contains approximately how much water?
50%-55%
Factors that determine the distribution of water in the body include all of the following except
Height
What happens to cells placed in hypertonic solution?
the cells shrink
Ions that carry a positive charge are called
Cations
Cells in a hypertonic solution do what?
shrink
Which of the following contributes most to the weight of the human body?
Water
Which one is the main intracellular osmotic ion?
K+
Which one is the main ion lost in sweat?
Na+
Intravenous injections are how?
isotonic
The definition of a hypertonic solution is…
There is more salt in the solution than inside the cell
Fat tissue contains more water than muscle tissue.
False
For emergency rehydration what needs to be done?
Give patient intravenous fluids.
An average person will be functional without water for what period of time?
3 days
On average, for how long can a person survive without water?
7 days
Free water molecules can pass through the cell membrane during osmosis.
True
The DASH diet plan was devised to prevent
hypertension.
Why drinking sea water is dangerous?
because it is hypertonic
Which organ does water management?
the colon
Which one is the ion that is mainly lost during dehydration
sodium
Please match the solution types to their correct description:
isotonic
hypotonic
hypertonic
equal amount of electrolytes inside and outside the cell
fewer electrolytes outside compared to the cytoplasm
more electrolytes outside compared to the cytoplasm
Cells in a hypotonic solution do what?
swell