The document discusses medical prefixes. It defines and provides examples for several prefixes: - Macro- means large, like macrocephaly meaning a large head. - Micro- and micr- mean tiny or small, like microcephaly meaning a small head. - Post- means after, like postnatal meaning after birth. - Pre- and pro- mean before, like preoperative meaning before surgery. - Other prefixes discussed include retro-, semi-, trans-, tri-, and ultra-. Interactive exercises provide the meanings of prefixes in different medical contexts.

1. Medical Prefixes (Day 2)
University of Health Sciences FBS
Year 3

2. Prefixes (Day 1)
1. A-, an-
2. Ante-
3. Anti-
4. Bi-
5. Co-, con-, com-
6. De-
7. Di-
8. Extra-, extro-
9. Hemi-, semi-
10. Hyper-
11. Hyp-, hypo-
12. Infra-
13. Inter-
14. Intra-
15. Intro-

3. Prefixes (Day 2)
16. Macro-
17. Micro-, Micr-
18. Post-
19. Pre-, Pro-
20. Retro-
21. Semi-
22. Trans-
23. Tri-
24. Ultra-

4. Macro- Large
• Example:
•Macrocephaly = abnormally large head
•Macro = large
•Cephaly= head

5. Micro-, micr- Tiny, Small
• Examples:
•Microcephaly = abnormally small head
•Micro = small
•Cephaly= head
•Microscope = instrument to look at small objects
•Micro = small
•Scope = an instrument for looking at things

6. Post- after, or following, behind
• Examples:
•Postnatal = after birth
•Post = after
•Natal = at time of birth
•Postoperative (“Post-op”) = after surgery
•Post = after
•Operative = operation / surgery

7. Pre-, Pro- In front of, before, preceding
• Examples:
•Preoperative (“Pre-op”) = before surgery
•Post = before
•Operative = operation / surgery
•Proactive = acting before (something happens)
•Pro = before
•Active = acting

8. Macro- Choose correct meaning:
1. After, or following, behind
2. In front of, before, preceding
3. Large
4. Tiny, small

9. Macro- Choose correct meaning:
1. After, or following, behind
2. In front of, before, preceding
3. Large
4. Tiny, small

10. Micro-, micr- Choose correct meaning:
1. After, or following, behind
2. In front of, before, preceding
3. Large
4. Tiny, small

11. Micro-, micr- Choose correct meaning:
1. After, or following, behind
2. In front of, before, preceding
3. Large
4. Tiny, small

12. Post- Choose correct meaning:
1. After, or following, behind
2. In front of, before, preceding
3. Large
4. Tiny, small

13. Post- Choose correct meaning:
1. After, or following, behind
2. In front of, before, preceding
3. Large
4. Tiny, small

14. Pre-, pro- Choose correct meaning:
1. After, or following, behind
2. In front of, before, preceding
3. Large
4. Tiny, small

15. Pre-, pro- Choose correct meaning:
1. After, or following, behind
2. In front of, before, preceding
3. Large
4. Tiny, small

16. Is the
baby’s head
too big or
too small?
What is the prefix? _______
_________cephaly
Normal size

17. Is the
baby’s head
Too big or
too small?
What is the prefix? Micro-
Microcephaly
Normal size

18. Before or After birth?
Prefix: ____
Meaning:_____
______natal

19. Before or After birth?
Prefix: post-
Meaning: after
postnatal

20. What is the prefix? ____
What is the meaning? _____
______scope

21. What is the prefix? Micro-
What is the meaning? Small
microscope

22. SURGERY
____-op
Prefix? ____
Meaning? _____

23. SURGERY
Pre-op
Prefix? Pre-
Meaning? Before

24. SURGERY
Pre-op
Prefix? Pre-
Meaning? Before
____-op
Prefix? ____
Meaning? _____

25. SURGERY
Pre-op
Prefix? Pre-
Meaning? Before
Post-op
Prefix? Post-
Meaning? After

26. Retro- Behind, backward
• Example:
•Retrograde = moving backwards
•Retro = backward
•Grade = moving

27. Semi- Half
• Example:
•semicircle = half of a circle
•Semi = half
•Circle = circle

28. Retro- Choose correct meaning:
1. Half
2. Behind, backward
3. In front of

29. Retro- Choose correct meaning:
1. Half
2. Behind, backward
3. In front of

30. Semi- Choose correct meaning:
1. Half
2. Behind, backward
3. In front of

31. Semi- Choose correct meaning:
1. Half
2. Behind, backward
3. In front of

32. What is the prefix? ____
What is the meaning? _____
Which way is
blood flowing?

33. What is the prefix? Retro-
What is the meaning? Backward
“Retrograde blood flow” =
Blood is moving backward

34. _______circle
What is the prefix? ______
What is the meaning? _______
_____circular canals
in the ear

35. Semicircle
What is the prefix? Semi-
What is the meaning? half
semicircular canals in
the ear

36. Trans- Through or across
• Example:
•Transurethral= through the urethra
•Trans = through
•Urethral = the urethra

37. Tri- Three
• Example:
•Tricuspid valve = heart valve with three cusps
•Tri = three
•Cuspid = cusps on a heart valve

38. Ultra- Excessive, beyond
• Example:
•Ultrasound = Using sound waves beyond human
hearing
•Ultra = beyond
•Sound = hearing

39. Trans- Choose correct meaning:
1. Three
2. Excessive, beyond
3. Through or across

40. Trans- Choose correct meaning:
1. Three
2. Excessive, beyond
3. Through or across

41. Tri- Choose correct meaning:
1. Three
2. Excessive, beyond
3. Through or across

42. Tri- Choose correct meaning:
1. Three
2. Excessive, beyond
3. Through or across

43. Ultra- Choose correct meaning:
1. Three
2. Excessive, beyond
3. Through or across

44. Ultra- Choose correct meaning:
1. Three
2. Excessive, beyond
3. Through or across

45. _______urethral
What is the prefix? ______
What is the meaning? _______

46. transurethral
What is the prefix? Trans-
What is the meaning? Through

47. _______sound
What is the prefix? ______
What is the meaning? _______

48. ultrasound
What is the prefix? Ultra-
What is the meaning? Beyond

49. How many
cusps are
there?
Prefix: _____
___cuspid

50. How many
cusps are
there? 3
Prefix: tri-
Tricuspid
valve
2
1
3

51. How many
cusps are
there? 3
Prefix: tri-
Tricuspid
valve
2
1
3
How many
cusps are
there?
Prefix: _____
___cuspid
valve

52. How many
cusps are
there? 3
Prefix: tri-
Tricuspid
valve
2
1
3
How many
cusps are
there? 2
Prefix: bi-
Bicuspid
valve

53. Prefixes (Day 2)
16. Macro-
17. Micro-, Micr-
18. Post-
19. Pre-, Pro-
20. Retro-
21. Semi-
22. Trans-
23. Tri-
24. Ultra-

54. Telephone
Macrocephaly
Macrophage
Microcephaly
Microscope
Microbiology
Postnatal
Postoperative
Preoperative
Preview
Proactive
Retrograde
Retrotransposon
Semicircle
Semi-truck
Transurethral
Transfusion
Tricuspid valve
Triglycerides
Ultrasound
Ultravirus