Histology

Question 1

What is Histopathology?

Answer 1

study of diseased tissues

Question 2

What is Histology?

Answer 2

Study of normal tissues and structures.

Question 3

What is Cytology?

Answer 3

Examination of cell structures

Question 4

4 applications of Histology

Answer 4

Experimental biology
Pathology
Ecotoxicology
Veterinary diagnosis

Question 5

Histology techniques- 6 stages

Answer 5

1- fixation
2- Dehydration
3- Clearing
4- Decalcification
5- Wax impregnation
6-Blocking, microtomy, staining, and mounting

Question 6

Gill Pathologies indicators (4)

Answer 6

Mucus secretion
Epithelial swelling
aneurysms
Parasitic infestations

Question 7

Liver Pathology indicators (4)

Answer 7

Fatty change
Necrosis
Tumour formation
Vascular damage

Question 8

Reproductive pathology indicators (4
)

Answer 8

Gamete abnormalities
gonad atrophy
tumors
developmental issues in offspring

Question 9

Histology Case study

Answer 9

Sticklebacks used to study biomarker responses to pollution (e.g., gill and liver histology)

Biomarkers in Environ

Question 10

Histological Biomarkers in Environmental Monitoring:

Answer 10

A measurable biological response to contaminants.

Assesses exposure and effects using biochemical, physiological, and histological methods.

Question 11

Challenges in pollution monitoring

Answer 11

Variability due to abiotic and biotic factors (e.g., water quality, temperature, pathogens).

Requires robust experimental design and normalization against factors like size and nutrition.