As the volume of urine in the urinary bladder increases,
A. the transitional epithelial cells lining the bladder change from columnar to flat.
B. the number of layers of transitional epithelial cells appears to increase.
C. the smooth muscle in the walls of the bladder is stimulated to relax and expand more.
D. contractions of skeletal muscles in the bladder wall cause it to release urine into the ureters.
E. Both the transitional epithelial cells lining the bladder change from columnar to flat and the number of . layers of transitional epithelial cells appears to increase are correct.
Answer: A. the transitional epithelial cells lining the bladder change from columnar to flat.
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