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 with a set of properties at all levels of organization that distinguish it from non-living matter. Distinguish between animal and plant organisms.
Anatomy Levels
Parts of your body work together and complete tasks that will help you live your life. What is an organism? The definition can cover the most diverse levels of organization of living matter. At the lowest damage - these are cells, at the highest - tissues and organs. The entire system and individual components are important. For example, your heart is a strong muscle, which makes it an excellent assistant for pumping blood through kilometers of blood vessels in your body.
- Cells. Anatomy begins at the microscopic level with cells, which are the basic units of living things. 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 transfer messages (nerve impulses) between your body and your brain.
- Tissues and organs. A tissue is a group of cells that work together to accomplish a task. For example, muscle tissue consists of muscle cells that contract and relax to create movement.
- An organ consists of a group of tissues that work together to do work. A special type of muscle tissue called smooth muscle has been discovered 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 the passage of blood.
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 signs:
- metabolism;
- height;
- development;
- reproduction;
- heredity;
- variability.
An organism can consist of a single cell or of millions. Be it bacteria, fungi, algae or animals and people - these are all integral biological systems with the most diverse levels of organization. The appearance of multicellularity led to the formation of special cells to perform certain functions in tissues and organs. Thus, the overall efficiency of the body increases, its structure becomes more complicated. This was an important evolutionary stage on the planet.
What is body composition?
Body composition is an analysis of the percentage of accumulated fat in the body compared to muscle mass. Have you ever thought about your weight? Or maybe you made an attempt to get a better shape in the end. Many people are puzzled by problems related to weight, obesity, self-esteem, and health. This is where the concept of body composition arises.
The composition of the body is exactly what it consists of. Each organism contains muscles, bones, organs, tissue and fat. However, proportionally fat, in particular, varies greatly from person to person. And this focuses on body composition. How is the determination of fat in the body?
Fat is different
First of all, it is important to understand that there are various types of fat in the body. And some of them are not enemies. Everyone has fat, and all people need his strategic supply in order for the body to function properly. However, many people eventually get an extra layer that can be stored in the most unnecessary places.
It is not a secret that a healthy person has less fat and more dry mass. Knowing this, one can better understand why considering only a person’s weight is not always an accurate measure of good health. You can put two people side by side, who weigh the same, but the percentage of fat they have will be completely different, which will also clearly affect the appearance.
Tests and Examples
There are several ways to measure a person’s body composition. These are non-invasive and fairly accurate estimates. Since measuring body composition includes internal tissues and body parts, there is a certain degree of evaluation.
The first test involves measuring skin folds. This is a way to estimate the amount of accumulated fat in the body under the skin. In this case, the skin is pinched and pulled out in certain areas of the body, such as the abdomen, thighs and triceps. This is done using a special clamp - a caliper, a tool for determining the thickness of the skin fold. This method is considered the most accurate for people with an average amount of fat in the body.
The second way is from photographs with people already measured. Naturally, this method is not accurate, but you can find out the approximate scope by comparing your reflection with those proposed in the picture.
The third method is body analyzer scales. The basis of their work is the use of electrical impulses that penetrate the body. The calculations are carried out due to the resistance of various tissues, which appears when a weak current is passed through them. Such impulses are able to miss only organic matter, without fat. However, 100% of the result from this method is also not worth the wait.
Another option is to use calculators that help calculate the percentage of adipose tissue by analyzing data on the age, height, weight and volume of certain parts of the body.
When considering questions about what the body is, the definition of fat in the body composition, 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, therefore it is important to monitor by all available means the fat content as subcutaneous, and internal to keep your body healthy and beautiful for as long as possible.