Quote:
Originally Posted by Stitchawl
A Multi-part question about us!
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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2. Alcohol is a poison, and the body cannot digest alcohol. The alcohol must therefore leave the body via urine. Since urine can contain only a certain concentration of alcohol, the body must use its own water to reduce the concentration of alcohol in the urine. This is why large amounts of spiritus makes you thirsty
4. Water flows over the gills, and the gills absorb oxygen from the water. The lungs suck in air, and takes oxygen from there. There are also other differences; size, etc., but I believe this is the main difference
5. Red blood cells "lives" about 100 days. Since they lack a cell core (and therefore have no DNA) they cannot repair themselves. They are collected and broken down in the liver and new blood cells are created inside the large bones in the body