We explain what a system in biology is and what is the difference between apparatus and system. In addition, how many systems the human body has.
What is a system in biology?
In biology , a system is a set of ordered organs that are related and interact with each other to fulfill a certain physiological function.
The organs are associations of different tissues that fulfill a specific function but, at the same time, require the other organs of the system to function properly, that is, they work in an integrated way .
Within each system, the organs have the same embryological origin and the same structure.
What is the difference between apparatus and system?
In biology, the words “system” and “apparatus” are often used interchangeably, although there are authors who establish differences between the two terms.
- System. It is made up of organs that have a similar structure and origin, as well as being homogeneous. This means that within each system the same kind of tissue predominates. In addition, each system works in an integrated way to fulfill a specific function.
- Apparatus. It is made up of elements that are not homogeneous or equal to each other but are heterogeneous and different. In addition, these elements are not organs but systems, so the function of each device has a higher range than that of any system. It has several specific functions and its objectives are broader than those of the systems.
How many systems does the human body have?
In the human body there are the following devices and systems, with their respective functions and organs:
- Circulatory . It is responsible for transporting oxygen and nutrients to the organs of the human body. This device is made up of the heart, blood and blood vessels (capillaries, veins and arteries), which carry blood throughout the body.
- Respiratory apparatus . Composed of lungs, nostrils and tubes, this device has as its main function the exchange of gases within the body .
- Digestive . Its main function is to transform and absorb food for use by body cells. The functions of digestion are the transport of food, the secretion of digestive juices, the absorption of nutrients and excretion. The organs that make up this apparatus are the large intestine, small intestine, pancreas, liver, esophagus and salivary glands.
- Integumentary system. Its main function is to protect, separate and inform the living being about the environment in which he is immersed. On certain occasions, it also acts as an exoskeleton. Faneras and the skin are the organisms that integrate it.
- Muscular system . It is the one that gives shape, structure and mobility to the body. It is composed of muscles that also protect certain vital organs.
- Reproductive system . Your task is to promote sexual reproduction . It also depends on him urination and synthesis of sex hormones.
- Immune system . Its function is to protect the human body from outside agents. It is composed of the thymus, mucosa, bone marrow, blood, lymphatic system, lymphatic system, skin and vessels.
- Endocrine system . It is responsible for secreting hormones that regulate certain functions of the body such as metabolism or growth.
- Nervous system . It is responsible for capturing and processing the information of the medium to, from it and through nerve connections, send control and coordination signals on the different organs of the body.
- Excretory system. He is in charge of waste disposal. Among the organs that comprise it are the kidneys, urethra, bladder and ureters.
- Bone system . Composed of bones, it is the system that protects the rest of the organs and gives support and support to the body.
- Lymphatic system. Its function is to transport lymph to the heart in a unidirectional way. It is composed of lymphatic tissues, lymph, spleen, bone marrow, thymus and lymph nodes.