Introduction to Histology

What is the purpose of dehydration in tissue processing?

To remove water from the tissue

What is the ideal temperature range for melting para n?

Between 46 and 68 degrees Celsius

What type of microtome is used for fresh, unprocessed tissues?

Cryomicrotome

What is the function of hematoxylin in staining?

Stains basophilic structures

What is the final step of staining in tissue processing?

Washing with alcohol

What type of microscope is used to study structures that are polarized?

Polarized Microscope

What is the purpose of fixation in tissue processing?

To preserve the tissue structure

What is the primary function of the ECM in forming tissues?

To provide structure and support to the cells

What is the main objective of fixation in histology?

All of the above

What is the result of the reaction between the fixative and the protein in tissue fixation?

A gel-like substance that preserves tissue structure

Which of the following is an example of physical fixation in everyday life?

Sun-drying vegetables and fruits

What is the basic structural and functional unit of a body?

Cell

What is the term for the breakdown of tissues by the body's own enzymes?

Autolysis

What is the characteristic of cells that form a tissue?

They have the same structure and function

What is the primary function of an electron microscope?

To see the ultra structures of the tissue in light and dark colors

What type of electron microscope is used to observe processed tissues?

Transmission Electron Microscope

What is the purpose of autoradiography?

To use radioactive material to study a tissue

What is the main goal of histology?

To observe and detect normal structures of tissues

What is the purpose of cell and tissue culture?

To put cells in in-vitro conditions

What is the function of immunohistochemistry?

To identify some types of tumors using antibodies

What is the purpose of enzyme histochemistry?

To use enzymes to observe tissues upon a reaction

What is the limitation of tissue observation?

The processing of the tissue

What is the relationship between histology and tissue observation?

Histology is the study of tissues to observe and detect normal structures of tissues