What is an artifact in histology?
An artifact is defined as any structure or feature in the histological section, which is not normally present in the normal tissue, and it may come from outside sources.
What are artefacts in microscopy?
Artifacts are damage caused in specimen preparation and can be confused with specimen ultrastructure. Many artifacts are a result of mechanical or chemical action during sample preparation and some artifacts are due to irradiation by the electron beam during examination of the specimen in the microscope.
What are histological features?
Histology, also known as microscopic anatomy or microanatomy, is the branch of biology which studies the microscopic anatomy of biological tissues. Histology is the microscopic counterpart to gross anatomy, which looks at larger structures visible without a microscope.
What is histology images?
Histopathology is the study of the signs of the disease using the microscopic examination of a biopsy or surgical specimen that is processed and fixed onto glass slides. To visualize different components of the tissue under a microscope, the sections are dyed with one or more stains.
How are blood and nervous tissue related?
Blood vessels and nerves are branched structures that travel together to supply almost every tissue in the body. Blood vessels are composed of endothelial cells and sometimes pericytes or smooth-muscle cells; nerves consist of nerve axons and supporting Schwann cells.
Does nervous tissue need blood?
The supply of blood to the brain is crucial to its ability to perform many functions. Without a steady supply of oxygen, and to a lesser extent glucose, the nervous tissue in the brain cannot keep up its extensive electrical activity.
What are the three types of nervous tissue?
Neurons, or nerves, transmit electrical impulses, while neuroglia do not; neuroglia have many other functions including supporting and protecting neurons.