K.O.I. Course #206 - Koi Physiology
INSTRUCTIONS:
1. Go to the K.O.I. web site, www.koiorganisationinternational.org, Log In and order the Course Book, and study it.
2. TAKE THE TEST (44 multiple choice questions below) and SUBMIT.
3. A CERTIFICATE OF COMPLETION will be emailed to you. Congratulations!

When you are done with the test, click here: www.koiorganisationinternational.org/node/180/

All questions refer to normal, healthy Koi and Koi ponds unless otherwise specified. If two answers are correct, choose the one that better or more closely describes the correct answer.
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32. What are three (3) reasons generally given for fasting Koi?
1 point
18. What mechanism in the gills is available to a resting Koi to reduce the workload of the heart?
1 point
17. The operculum acts as
1 point
37. Can a kidney sample be normally taken without killing the fish?
1 point
36. Which organ in Koi is normally considered best for sampling when in search of systemic pathogenic bacteria?
1 point
8. Relative to their normal environment, Koi are:
1 point
3. What is the Koi’s first line of defense against water-borne pathogens?
1 point
31. Can a Koi digest food below 55° F?
1 point
12. In what form do Koi excrete most of their waste nitrogen?
1 point
Test
42. What function does lamellar recruitment serve?

1 point
6. What is the purpose of urine production in Koi?
1 point
19. In blood, the Root shift is the reduced capacity of the hemoglobin for oxygen caused by high partial pressure of
1 point
23. What is diffusion?
1 point
14. How does hemoglobin transport oxygen in the blood?
1 point
33. The fasting of Koi during what season is normally recommended?
1 point
10. What does “ammonotelic” mean?
1 point
29. For osmoregulation in fresh water, - - - and - - - ions (the second ion carrying the excess CO2) are excreted into the surrounding water. (fill in the blanks)
1 point
Your answer
7. Would an IM injection likely disburse more quickly in red muscle or in white muscle?
1 point
34. What is the physiologic reason Koi do not intentionally drink much water (i.e., take water into the gut)?
1 point
40. Are all cyprinids carp?
1 point
13. What frequency vibrations does the lateral line system sense?
1 point
35. From which organ does a Koi excrete most of its waste ammonia?
1 point
38. What detrimental condition can result from overfeeding?
1 point
27. In general, what are the two (2) major osmoregulation problems faced by Koi?
1 point
22. On what things is a resting Koi normally expending significant energy? (choose three)?
1 point
28. In an undamaged Koi, thru what organ does the majority of water enter its blood system (choose one)?
1 point
15. How does counter current blood and water flow aid gas exchange in gills?
1 point
44. What does the hematopoietic system do in a Koi?
1 point
24. What is osmosis?
1 point
5. What is the pneumatic duct used for?
1 point
20. The Bohr shift is a decrease in the affinity of the hemoglobin for oxygen caused by low - - -?
1 point
30. Does food stop moving thru a Koi gut at all temperatures below 55° F?
1 point
41. Are all carp cyprinids?
1 point
4. How does a Koi taste things?
1 point
1. What is physiology?
1 point
11. What part does stress play in the health of Koi? Explain
1 point
Your answer
43. What is the significance (key word) of the P50 of an oxygen dissociation curve (explain)?
1 point
Your answer
21. The net effect of the Bohr and Root effect is to increase the partial pressure of what at the tissue?
1 point
16. What is the function of the hepatic portal system?
1 point
9. What is the approximate salinity of Koi blood?
1 point
39. Heavy metals within a Koi tend to accumulate within what organ?
1 point
25. How does the addition of a moderate amount of salt to the water help a Koi with an open ulcer?
1 point
26. Do fasting and/or resting Koi produce ammonia?
1 point
2. How many times more oxygen will Koi blood normally hold as compared to water?
1 point
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