This systemic view is particularly useful in the field of medicine, which usually consists of specialized branches in each system: endocrinology, cardiology, gastroenterology, etc.
Endocrine system is defined as a complex system of internal regulation , which uses biochemical compounds called hormones to carry out the start, regulation or stop of various processes in the body. These hormones are produced thanks to the glands of the body and released into the blood, where through this they travel to their destination.
Thanks to the existence of hormones, sexual, metabolic and growth aspects of the body can be regulated, and even thermoregulation.
It is a very important system, since it is considered the main control system of the human body , it comprises an extensive network of nerves that are made up of thousands of nerve cells (glioma and neurons). This system is in charge of carrying out the functions of the voluntary movement and decision-making, and also of conscience.
The nervous system is classified into the central nervous system, which constitute the brain, cerebellum and telencephalon, located within the skull, as well as the spinal cord that is located in the vertebral column, said spinal cord is linked to an extensive network of nerves of different sizes and importance that constitute the peripheral nervous system.
It is the one that implies the oxygenation of the blood and the expulsion of carbon oxide, which are elementary processes for cellular respiration and energy metabolism. This apparatus involves the lungs, bronchi, and the entire airway from outside organisms to them: trachea, pharynx, larynx, nose, and the muscle that supports inflation and deflation of the lungs: the diaphragm.
Breathing is considered as a semi-reflex movement that can be controlled but not prevented voluntarily, and that happens by expanding the rib cage to allow air to enter through the nostrils, and descend to the lungs and in the bronchi it permeates into the blood . Similarly, the carbon dioxide accumulated in it is captured and exhaled in the opposite direction through the same channels.
The blood is responsible for transporting the oxygen that enters the lungs and must be distributed throughout the body. For this reason, the blood encompasses an extensive network of arteries and capillaries that carry oxygenated blood to every corner of the body, and veins that collect the blood made up of carbon dioxide and travel each turn in the direction of the lungs. , to start the tour again.
This digestive system is essential for nutrition and food, that is, the assimilation of organic matter that comes from outside to the outside of the body. The circuitry of the system starts with the mouth, tongue and teeth, as well as the salivary glands.
In this area, the food is cut, crushed and moistened and prepared (called “food bolus” ) for its fall through the esophagus, until it reaches the stomach, a kind of cauldron made up of gastric acids whose function is to disintegrate the food and reduce it to its most basic elements.
Also called the urinary system, it is the system whose function is to rid the body of harmful substances and metabolic residues, said accumulation in the body is high risk. For this, it has two types of expulsion routes:
- The sweat glands: these are located along the skin and release sweat, a healthy liquid in which we get rid of a large amount of harmful substances and pathogenic microorganisms.
- The urinary system: made up of kidneys, blood filters where metabolic waste substances (urea) are deposited and transformed into urine, then stored in the bladder, where they arrive through the ureters after different reabsorption processes and filtering substances of great benefit.
This system guarantees the human body the ability to procreation, that is, to create new individuals of the species. Since the reproduction of human beings is sexual, this apparatus is present among men and these are:
- Male reproductive system: composed first of the penis, then there are the external sexual glands of the man, the testicles, located below the scrotum, in independent sacs of the penis.
- Female reproductive system : the sexual glands such as the ovaries are present, there the female gametes are formed: the ovules.
It carries out the defense of the organism, in order to identify, pursue and eliminate foreign bodies and substances that can be introduced. To carry out its functions, it has a series of organs whose function is to produce white blood cells (the spleen, lymph nodes, the thymus and bone marrow) of various types: cells specialized in revealing, attenuating and expelling high-risk agents like viruses, bacteria, etc.
The locomotor system is the link between the muscular apparatus and the skeletal apparatus , these apparatuses are composed of 650 muscles that allow the mobilization of the body, and the 206 bones also of different shapes and sizes that provide support to the body and help to protection of internal organs.