Section 10 (More prefixes)
Brev-: short
Counter-: against
3. Uni-: one
4. Mono-: one
5. Bi-: two
6. Bin-: two
7. Di-: two
8. Ter-: three
9. Tri-: three
10. Quadra-: four
11. Tetra-: four
12. Acro-: extremity, limbs
13. Oligo-: few
14. Aud-: ear, hear
1.
2.
Blasto-: early, embroyonic
Adeno-: gland
17. Angio-: vessel
18. Arthro-: joint
19. Bucc/o-: cheek
20. Cardi/o-: heart
21. Corp-: body
22. Chondr/o-: cartilage
23. Cephal/o: head
24. Cyst/o-: bladder
25. Cyt/o: cell
26. Dent/o-: tooth
27. Dermat/o-: skin
28. Duoden/o-: duodenum
15.
16.
Sheep heart dissection
Please refer to the large Lab Manual
for directions and instructions (exercise
30 in many books)
Your goal for today
Determine how blood moves through the
heart
 Identify all the valves
 Understand the difference between right
and left sides
 Begin the dissection which you will finish
up tomorrow
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Heart Dissection Instructions
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Always wear apron and safety glasses (back of the
room)
Please refer to the large Lab Manual for directions and
instructions (exercise 30; page 306-307)
Obtain preserved heart, dissecting tray, instruments,
and gloves
Please follow directions of the lab sheet and refer to
the lab manual if you have any questions
Spend significant time studying the outside of your
heart
Examine valves and pumping before cutting
Time to cut
The first incision is along
the right ventricle and
atrium, allowing us to see
inside the right side of the
heart.
 The right ventricle can be
identified by squeezing the
heart, since the
myocardium on the right
side is much less rigid than
that of the left ventricle.
 This incision allows us to
see the tricuspid valve and
the right ventricular
outflow tract which
includes the pulmonary
valve.

Clean up
Rinse your heart and place it in a gallon size
bag with your names on it
 Rinse all tools and dissection pan
 Pat everything dry
 Clean off your lab table and push in lab stools

Failure to clean up will land you in detention, and
you will clean up for 30 minutes after school.