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PCAT Biology Excretion
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PCAT Biology Excretion
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25 Questions

1. Function to maintain the osmolarity of the blood -excrete numerous waste products and toxic chemicals -conserve glucose - salt - and water

2. Concentrated urine in the collecting tubules flows into the pelvis of the kidney - a funnel-like region that opens directly into this

3. Anatomic arrangement of permits the reabsorption of ((% of the filtrate in the collecting tubules -makes the production of concentrated urine possible

4. Remains relatively constant at 7.4

5. Affect the blood acidity by causing changes in the PCO2

6. Produced by the deamination of amino acids in the liver and diffuses into the blood for ultimate excretion in the kidneys

7. The fluid and small solutes entering the nephron -isotonic with blood plasm

8. A hormone that causes an increased exchange transport of sodium and potassium ions along the distal convoluted tubule - the collecting tubule - and the collecting duct - resulting in a decreased excretion of sodium ions in the urine and an increased

9. The removal of metabolic wastes produced in the body

10. In the liver - leads to the production of nitrogenous wastes such as urea and ammonia

11. Serves to regulate body temperature - since the evaporation of sweat produces cooling

12. Openings of tracheae

13. Lungs - liver - skin - and kidneys

14. Pores in leaves

15. Affect the blood acidity by causing changes in the HCO3-

16. No specific excretory system in plants -any excess CO2 - O2 - and H2O vapor - leaves the lant by diffusion through stomata and lenticels

17. Filtration - secretion - and reabsorption are the three process

18. Created when exiting and reentering at different segments of the nephron - with tissue osmolarity increasing from cortex to inner medulla

19. Counter-current system causes the medium in the medulla of the kidney to be hyperosmolar with respect to the dilute filtrate flowing in the collecting tubule

20. Nitrogenous wastes of arthropods

21. Carbon dioxide is released from the tissues into adjacent tracheae through spiracles

22. Increases the permeability of the collecting duct to water - allowing more water to be absorbed and more concentrated urine to be formed

23. Divded into three regions: outer cortex - inner medulla - renal pelvis

24. Essential substances and water are reabsorbed from the filtrate and returned to the blood -occurs primarily in the proximal convuluted tubule and is an active process

25. As the filtrate flowing in the collecting tubules passes through this region of the kidney - on its way to the pelvis and ureter - water flows out of the collecting tubules by osmosis

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