Across
- 4. holds urine and carries it out
- 5. help purifies blood, involved in maintaining homeostasis
Down
- 1. expands and stores the urine
- 2. excretes co2 and is apart of the respiratory system as well
- 3. Narrow tubes that transfer urine from the kidneys to the bladder
- 4. tube that allows urine to pass outside the body