When you study human anatomy, you will learn about one of the most fascinating things on the planet - the human body. There is no doubt that a living organism is a curious phenomenon in itself. What is an organism? The definition can be given as follows: it is a living whole that has a set of properties at all levels of organization that distinguish it from inanimate matter. Distinguish between animal and plant organisms.
Anatomy levels
The parts of your body work together and perform tasks that will help you live your life. What is an organism? The definition can cover a variety of levels of organization of living matter. At the lowest level - these are cells, at the highest - tissues and organs. The whole system and individual components are important. For example, your heart is a strong muscle, which makes it a great helper in pumping blood through miles of blood vessels.in your body.
- Cells. Anatomy begins at the microscopic level with cells, which are the basic units of living beings. There are trillions of cells in your body, and they vary in size and shape depending on the work they do. For example, your nerve cells have long extensions that they use to carry messages (nerve impulses) between your body and your brain.
- Tissues and organs. A tissue is a group of cells that work together to complete a task. For example, muscle tissue is made up of muscle cells that contract and relax to create movement.
- An organ is made up of a group of tissues that work together to do a job. A special type of muscle tissue called smooth muscle has been found in your heart and blood vessels. This smooth muscle is lined with another type of tissue called epithelial tissue, which provides an ideal surface for blood to pass through.
What is an organism: definition
An organism is an integral biological system, which is an indivisible unit of life. All its elements are interconnected and have their own characteristics and features. What is a living organism? The definition can be given as follows: it is a living system that has certain characteristics:
- metabolism;
- growth;
- development;
- reproduction;
- heredity;
- volatility.
An organism can consist of a single cell or millions. Be it bacteria, fungi, algae, or animals and people, these are all integral biological systems with the most diverse levels of organization. The emergence of multicellularity led to the formation of special cells to perform certain functions in tissues and organs. Thus, the efficiency of the body as a whole increases, its structure becomes more complicated. It was an important evolutionary stage on the planet.
What is body composition?
Body composition is an analysis of the percentage of stored body fat compared to muscle mass. Have you ever thought about your weight? Or perhaps you've made attempts to end up in better shape. Many people are puzzled by problems related to weight, obesity, self-esteem and he alth. This is where the concept of body composition comes in.
The composition of the body is exactly what it is made of. Every organism contains muscles, bones, organs, tissue and fat. However, the proportion of fat in particular varies greatly from person to person. And this is the focus of body composition. How is body fat determined?
Fat is different
First of all, it is important to understand that there are different types of body fat. And some of them are not enemies. Everyone has fat, and all people need a strategic supply of it in order for the body to function properly. However, for many people, over time, an additional layer develops, which can be stored in the most unnecessary places.
It is no secret that a he althy person has less fat and more lean mass. Knowing this, you can better understand why considering only a person's weight is not always an accurate measure of good he alth. You can put two people side by side who weigh the same, but their body fat percentage will be completely different, which will also be clearly reflected in the appearance.
Tests and examples
There are several ways to measure human body composition. These are non-invasive and fairly accurate estimates. Since the measurement of body composition includes internal tissues and body parts, there is a certain degree of evaluation.
The first test involves measuring the skin fold. This is a way of assessing the amount of stored body fat under the skin. In this case, the skin is pinched and pulled outward in certain areas of the body such as the abdomen, thighs, and triceps. This is done using a special clip - a caliper, an instrument for determining the thickness of the skin fold. This method is considered the most accurate for people with average body fat.
The second way is from a photo with already measured people. Naturally, this method is not accurate, but you can find out the approximate frames by comparing your reflection with those suggested in the picture.
The third way is body analyzer scales. Their work is based on the use of electrical impulses penetrating the body. Calculations are carried out due to the resistance of various tissues, which appears when a weak current is passed through them. Only organic mass, without fat, can pass such impulses. However, 100% of the result from suchthe way is also not worth the wait.
Another option is to use calculators that help calculate body fat percentage by analyzing data on age, height, weight and volume of certain body parts.
When considering questions about what the body is, the definition of fat in the composition of the body, it is important to remember that proper weight loss is not just the desired numbers on the scales, it is also a reflection in the mirror, so it is important to follow all available means for the content fat, both subcutaneous and internal, to keep your body he althy and beautiful for as long as possible.
