The bodies of living beings have a complex organization, ranging from the smallest living structure to complex interconnected systems. Let's better understand the levels of organization of our body?
The human body is made up of several cells that perform the most varied functions. They constitute the smallest living part of our organism and can be called “basic units of life”.
As we are multicellular beings, we are made up of more than one cell. When there is a set of cells performing the same function and with similar characteristics, a fabric.
Our body is made up of various tissues, such as the epithelial, connective, muscular and nervous, which are extremely important. Blood tissue, for example, is formed by plasma, different types of cells (red cells and leukocytes) and some cell fragments (platelets), with the main function of transporting nutrients and oxygen throughout the body.
Blood tissue has several similar cells that work to mainly deliver oxygen and nutrients to other cells
The tissues of the body organize themselves and form the organs, important anatomical units. The heart, for example, is mainly made up of muscle tissue, which controls its contractions, causing the blood to pump to take place.
The heart is an organ made up mainly of muscle tissue.
Several interconnected bodies and performing functions that together contribute to a given objective form the systems. Imagine the heart again. It will be responsible for pumping blood with nutrients and oxygen throughout our body, however, it needs blood vessels for this to happen. Note that the heart, blood vessels, and blood are working toward a single goal, thus forming the cardiovascular system.
Our body is not made up of just one system, there is the excretory, respiratory, cardiovascular, digestive, nervous, muscular, urinary, reproductive, skeletal and integumentary systems. They all work together to keep us alive and healthy. This set of systems forms our body, our organism.
We can summarize the organization of our body as follows:
-Several cells together and performing a certain function form the tissues.
-The tissues, in turn, come together and form organs.
- These bodies form systems that work towards the same goal.
- Finally, the systems work together to form the organism.
See below a small diagram with the levels of organization of our body:
The diagram above demonstrates the levels of organization of our body
By Ma. Vanessa dos Santos
