1. The urinary system removes nearly all of the soluble waste from the body. TRUE 2. Diffusion is the passage of a substance from a high concentration to a low concentration. TRUE 3. As long as a urine sample is sterile, it doesn't matter when you run the urinalysis. FALSE 4. This refers to the hormone the kidney produces that is necessary for erythrocyte production? Erythropoietin 5. This part of the nephron descends into the medulla and returns to the cortex. Loop of Henle 6. The male urethra has a reproductive function 7. What blood vessel does oxygen transfer occur in the nephron? peritubular capillaries 8. What is the longest part of the nephron? PCT 9. Which type of epithelial cells make up the ascending loop of Henle? simple squamous 10. This refers to a hormone secreted by the adrenal cortex that increases the reabsorption of sodium into the bloodstream? Aldosterone 11. This term means difficult urination. Dysuria 12. Which of the following terms means a little urine? Oliguria 13. The kidneys are considered to be located outside of the body. TRUE 14. The left kidney is cranial to the right kidney. FALSE 15. Which of the following is the functional unit of the kidney? Nephron 16. The blood in these vessels contains the least amount of waste in the body. Renal vein 17. An animal that is "house trained" has learned to control… The muscle sphincter around the neck of the urinary bladder 18. Which of the following describes the calyx of the kidney? Cuplike extension in which the medullary pyramids fit 19. Which of the following crystals are most commonly seen in females? Struvite 20. Which of the following refers to the area where filtrate accumulates initially in the nephron? Capsular space 21. The DCT is located in the medulla of the kidney FALSE