Match the following.
1. Kidney

A. receives urine from the ureters and stores the urine
2. Nephron

B. bean-shaped organ that excretes urine
3. Ureter

C. tube that carries urine from the bladder to outside of the body
4. Bladder

D. transports urine from the kidney to the bladder
5. Urethra

E. microscopic filtering unit within kidney

Check all that occur during ventricular systole. a. the av valves open to allow blood to enter the ventricles from the atria. b. the av valves open to allow blood to enter the ventricles from the atria. c. the semilunar valves remain closed throughout systole to prevent backflow of blood into the ventricles. d. the semilunar valves remain closed throughout systole to prevent backflow of blood into the ventricles. e. the semilunar valves open to allow blood to flow into the large arteries. f. the semilunar valves open to allow blood to flow into the large arteries. g. the av valves close to prevent backflow of blood into the atria.