Answer: The braille alphabet.
Explanation:
Kidney controls the body’s acid-base equilibrium by secreting hydroxyl ions (OH-). It also balances by releasing hydrogen ions(H+) into the urine and re-absorbing bicarbonate ions(HCO3) from the urine. The female urethra implements two functions which are:
- To transport urine to the outside of the body and
- To transfer unfertilized eggs to the exterior of the body.