Quote:
Originally Posted by Stitchawl
1. What are the main endocrine glands of the human body?
2. Why does the urinary volume increase when alcoholic beverages are ingested?
3. Why is there a sense of pressure change inside the ear when someone goes down a mountain?
4. What is the difference between gills and lungs?
5. On average what is the life duration of the red blood cells? Where are they destroyed?
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1. Thyroid, pituitary, pancreas, ovaries/testes
2. Because they contain a lot of water?
3. The middle ear is sealed, except for the eustacian tubes. Going down a mountain, the outside air pressure increases, but the pressure in the middle ear doesn't, and you feel he difference on your ear-drum, until the pressures equalise through the eustacian tubes.
4. Gills extract oxygen from water, lungs from air.
5. About six weeks? They're destroyed in the liver, I think.