Levels of Organization. Levels of organization. The human body consists of basic units of life known as cells. Groups of cells similar in appearance, function and origin join together to form tissues. Different tissues then interact with each other to form organs.
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Most cells have the same basic components as are shown in the figure but they are all specialized to carry out particular functions within the body.
Cytology is a very important topic in medicine as many diseases can be diagnosed by studying cells.
In the above examples cyt/o was used at the beginning of words. It can also be used at the end of words in combination with other roots, its meaning remaining the same.
The study of tissues is known as histology, the combining form coming from a Greek word histos meaning web (web of cells).
Cells and tissues are very small and need to be examined using an instrument known as a microscope.
A sample of the biopsy material was sent for culture and sensitivity testing to the microbiology laboratory.