Nephrons, the functional unit of kidneys, are responsible for formation of urine. The sentences describe situations that are the result of problems in the urine formation process. For the nephron shown below, match each situation to the step in the urine formation process where the problem lies.
1. Stella's urine sample
shows the presence
of large proteins

2. John's blood test
report indicates
a high toxin level.

3. Miguel's blood test
shows an increase
in metabolic waste.

4. Janice's urine report
shows the presence
of vital minerals

Drag each label to the correct location of the image. Either filtration, secretion, reabsorption.