the human body contains more than two hundred different types of cells, each of which is unique. Dividing them into groups called tissues allows a similar structure and origin, as well as the functions performed. Tissues are the next hierarchical level of human anatomy after cells. They are a symbiosis of cells and intercellular space, the structure of which allows them to perform the functions assigned to them, thereby supporting the normal vital activity of the body.
In humans, 4 types of tissues are distinguished: epithelial, connective, muscle and nervous. Each of them is formed as a result of cell differentiation during the formation of the organism. What are the features of tissue anatomy, how do they interact and what functions do they perform? Anatomical reference will help you understand these issues!
Human tissue anatomy: from homogeneous cells to a highly differentiated organism
Formation of tissues, maintaining their shape and performing general functions is a complex process programmed in the body by DNA molecules. It is thanks to genetic information that cells are capable of differentiation – a biochemical process, as a result of which initially homogeneous units acquire specific features that subsequently allow them to perform certain functions. Thanks to this process, 4 types of tissues with similar anatomy and physiology appear in the body.
It is noteworthy that after differentiation, tissue cells retain their inherent features even in a new environment. To prove this, in 1952, experts at the University of Chicago carried out a visual study by dividing the cells of a chicken embryo and cultivating them in special enzymes. As a result of this experience, new colonies were formed, but at the same time the reactions and “behavior” of cells in the new structural environment were typical for the particular type of tissue from which they originally originated.
To understand how cells interact in the human body, consider the tissue anatomy in more detail.