Key Points:
1. ADH influences the kidneys filtration of blood, in which more water may be retained.
2. Urine contains salts, water and urea.
3. The salts and h2o affect the composition of tissue fluid which is called osmoregulation (isotonic, hypertonic and hypotonic states)
4. The composition of urine varies upon the conditions in which a person is operating.
very nice work, a pleasure to read
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