Histotechnology Lesson 5.1 and 5.2. Question and answers rated A+ 2023/2024

Histotechnology Lesson 5.1 and 5.2. Question and answers rated A+ 2023/2024 Fixation (histology) the process of fixing tissues with chemical of physical fixatives to preserve tissues Fixative actions (5) •Preserves the tissues in a life-like condition •Stops abnormal enzyme activity and metabolism •Stops autolysis by inactivating the lysosomal enzymes •Stops bacterial and fungal growth •Stops putrefactive changes Give 2 qualities of a perfect fixative •Works quickly with minimum distortion, penetrate the tissue rapidly, and evenly •It should have no hypotonic or hypertonic effect on tissue (causes minimum shrinkage or swelling) Physical fixation heat fixation, microwave fixation, and freezing chemical fixation uses organic or non-organic solutions to maintain morphology; chemical fixatives can coagulant, cross linking, compound fixatives