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Across 2. tough, fibrous tissue covering the kidney 4. rhythmic, wavelike motion of muscle that moves urine through the ureters 5. C-shaped structure that surrounds the glomerulus 6. state of equilibrium 11. funnel-shaped structure, 1st section of the ureter 13. external opening of the urinary system 15. where most of the collecting tubules can be found 16. muscular tubes that extend from the renal pelvis to the bladder 17. folds of mucous membrane that line bladder 18. area where ureter, nerves, blood vessels, and lymph vessels enter and leave the kidney 19. bean-shaped organs of the excretory system

Down 1. microscopic filtering units of the kidney 2. space in the body where the kidneys can be found 3. where most of the nephrons can be found 7. tube that carries urine from the bladder to the outside of the body 8. cluster of capillaries, 1st part of the nephron 9. another term for void 10. hollow, muscular sac, lies behind the symphysis pubis at the midline of the pelvic cavity 12. type of muscle that forms the bladder walls 14. concentrated liquid produced by the kidney