The composition of sweat means that in comparison with the normal osmolarity of body fluids it is:Group of answer choiceshypotonicisotonichypertonic
Question
The composition of sweat means that in comparison with the normal osmolarity of body fluids it is:
- Group of answer choices
- hypotonic
- isotonic
- hypertonic
Solution
Understanding the Composition of Sweat
Sweat is primarily composed of water, with various solutes such as sodium, chloride, potassium, and urea. In comparison to the normal osmolarity of body fluids (which is around 300 mOsm/L), the osmolarity of sweat is typically lower, making it hypotonic.
Analysis of the Options
-
Hypotonic: A solution that has a lower concentration of solutes compared to another solution. Sweat generally has a lower osmolarity than blood plasma due to its higher water content relative to solutes.
-
Isotonic: A solution with the same concentration of solutes as another. This does not apply to sweat as its osmolarity is lower.
-
Hypertonic: A solution with a higher concentration of solutes. Sweat does not fit this category either since it has a lower osmolarity than body fluids.
Final Answer
Based on the composition of sweat as compared to normal body fluids, the correct answer is hypotonic.
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