The filtrate that drips from the renal papillae into the calyces
A. has a higher concentration of waste products (urea) than the original filtrate.
B. may have lost up to 99% of its original volume.
C. is called urine.
D. has a higher concentration of waste products (urea) than the original filtrate, may have lost up to 99% of its original waste, and is called urine.
E. None of these choices is correct.
Answer: D. has a higher concentration of waste products (urea) than the original filtrate, may have lost up to 99% of its original waste, and is called urine.