Which of the following statements regarding epithelial cells in the urinary system is correct?
A.
Caudate epithelial cells originate from the upper urethra
B.
Transitional cells originate from the upper urethra, ureters, bladder, or renal pelvis
C.
Cells from the proximal renal tubule are usually round in shape
D.
Squamous epithelium lines the vagina, urethra, and wall of the urinary bladder