19. Which of the following describes the route of urine out of the body after it leaves the kidney?
A. renal vein, bladder, urethra, ureter
B. ureter, urethra, bladder
C. renal vein, ureter, bladder, urethra
D. ureter, bladder, urethra
E. urethra, bladder, ureter

Option D.

Ureter, bladder, urethra.

Explanation:

Blood move to the kidneys through the renal arteries. The filtered blood leave the kidney through the renal vein and goes back to the heart. After the filtered blood flow back to the heart, urines leave the kidney and move to the ureter, from the ureter it moves to the bladder, the bladder expands as urine fills it, when it is full, it move to the urethra.

answer:

convection currents in the magma drive plate tectonics. heat generated from the radioactive decay of elements deep in the interior of the earth creates magma (molten rock) in the aesthenosphere. the aesthenosphere (70 ~ 250 km) is part of the mantle, the middle sphere of the earth that extends to 2900 km.