IMPORTANT CONSIDERATION IN FIXING ORGANS

Question 1

Suspended WHOLE in 10% buffered formalin for 2 TO 3 WEEKS to ensure fixation and hardening prior to sectioning

Answer 1

BRAIN

Question 2

Should NOT BE DISSECTED before they are fixed since this may lead to tissue collapse and wrinkling due to escape of vitreous humor; formol-alcohol must be injected before immersing the organ in fixative

Answer 2

EYES

Question 3

Organ may be covered with LAYERS OF GAUZE to maintain it under the surface

Answer 3

AIR-FILLED LUNG

note:
- Healthy lungs will FLOAT
- Diseased lungs will SINK (TB, pneumonia)

Question 4

Packed with COTTON soaked in fixative of completely OPENED before immersion in fixing solution

Answer 4

HOLLOW ORGANS

Question 5

_____ is a local defect, or EXCAVATION of the surface of an organ or tissue that is produced by the SLOUGHING (SHEDDING) of inflamed necrotic tissue

Answer 5

ULCER

Question 6

______________ refers to the ABNORMAL ACCUMULATION OF FAT within previously injured parenchymal cells, commonly encountered in heart, kidneys and liver

Answer 6

FATTY DEGENERATION

Question 7

_____ is the ORGAN MOST COMMONLY AFFECTED by fatty degeneration

Answer 7

LIVER