OVERVIEW OF HISTOLOGY Flashcards
It is the study of the tissues of the body and how these tissues are arranged to constitute organs
Microscopic anatomy or Microanatomy
meaning of histos
web-like or tissue
meaning of logia
the study of…
meaning of tissue
weave or texture
Who coined the term “tissue” used in Histology which came into usage in the English language in the late 1700s?
Marie Francois Xavier Bichat (1771 - 1802)
(T/F) All Bichat’s work was done with a microscope.
False, without a microscope because his description of tissues is through the result of Gross Dissection with his naked eye.
(T/F) Bichat called his observations, “Bichat’s 21 textures”.
True
When were the first microscopes constructed in the Netherlands?
Late 1500s
Who was given credit for the first microscope?
Zacharias Janssen; Hans Lippershey (inventor of the first telescope) and Zacharias’ father, Hans Janssen (Magnification 3-9x, images poor)
Who developed the first miscroscope with HIGH MAGNIFICATION and good image quality?
Anthony van Leeuwenhoek (1633 - 1723) about 1670
- He used beads formed from drops of molten glass as his lenses.
- Microscopes were mounted on a metal plate that had an adjustable stage on which the specimen to be examined was mounted
- Natural light or light from a candle flame was used to illuminate the specimen
Anthony van Leeuwenhoek
In the _______, identifying how to have clear eyesight led to the discovery of refraction of mirrors; it is further developed resulting in ______ microscope.
1500s ; Light microscope
In 1670, he examined cork with a microscope and found it was composed of tiny “chambers”. Based on their observation, it was described as a spider’s home.
Robert Hooke
Who called tiny chambers a cell because it reminded him of the small rooms or chambers found in monasteries and described by the Latin word “cella”?
Robert Hooke
Smaller structures in the cytoplasm
Organelles
