Excretion

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Excretion test

1. Hormones messages differ from nerve messages in that hormones...

2. Our body filters urea from blood in the ?

3. Fish excrete...

4. Dialysis fluid does not contain...

5. Name the light pink part, the dark pink part, and the tube at the bottom.

6. What is the structure above called?

7. Why are salts and glucose not found in the collecting duct?

8. You have a relaxed afternoon on the couch drinking lots of water. Will your body produce more or less ADH? Just write more or less.

9. Why can't protein pass from the blood into Bowman's capsule whereas glucose, urea, and salts can pass through? What type of process is occurring as the fluid forms in Bowman's capsule?

10. There is glucose in the fluid in Bowman's capsule, but not in urine. Where has the glucose gone? Why is it good to have no glucose in the urine?

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Answers to excretion

1. Hormones are slower traveling and affect target cells in different areas.

2. Kidney

3. Ammonia

4. Protein

5. Bowman's capsule, Glomerulus, and arteriole

6. Nephron

7. Glucose is needed for energy in cells, and salts are needed for nervous system functions.

8. Less

9. Proteins are large molecules. The Bowman's capsule selectively filters only small substances into the nephron. This process is specifically called ultrafiltration.

10. Glucose is actively transported and reabsorbed from the nephron back into the blood. his can also be called selective reabsorption. Primarily, this process occurs in the proximal convoluted tubule.