Name the organ that removes each of these…
Contributed by StemPy LabTry it on paper first. A hint, the key idea and the worked solution are here when you need them.
Name the organ that removes each of these.
- Bilirubin and biliverdin.
- Sterols, hydrocarbons and waxes.
- NaCl, small amounts of urea and lactic acid, together with water.
- About mL a minute of a gas.
- Small amounts of nitrogenous wastes, in a fluid of the mouth.
Need a reminder? The key ideaShow
The lungs remove CO at about mL a minute, and water. The liver removes bile pigments, cholesterol, steroids, vitamins and drugs in the bile. Sweat has water, NaCl, a little urea and lactic acid, and it cools the body. Sebum has sterols, hydrocarbons and waxes. Saliva has small amounts of nitrogenous wastes. The water gained in a day equals the water lost: the urine is the part that the kidneys adjust.
The worked solution
Have you tried it?
Work it out on paper first. It is fine to get stuck or make a mistake: that is how we learn. When you are ready, go through the solution one step at a time, and check each step against your own.
Step 1. (a) The liver, in the bile.
Step 2. (b) The sebaceous glands, in the sebum.
Step 3. (c) The sweat glands.
Step 4. (d) The lungs. The gas is carbon dioxide.
Step 5. (e) The salivary glands, in the saliva.
Answer: (a) liver; (b) sebaceous glands; (c) sweat glands; (d) lungs; (e) salivary glands.
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