DYNAMICS OF THE HUMAN BODY-SYSTEMS MAKE UP

 

DYNAMICS OF THE HUMAN BODY:  The human body is organized from cells, and a group of cells makeup a tissue.  Then from the tissue level, a collection of tissues makeup an organ.  And then several organs will makeup a system, which will then make the whole human being as seen.  This complexity, involves thousands of chemical reactions and physiological processes and as soon as a deviation evolve form any, then we shall term that pathophysiology or in short, abnormal physiology and that will be regarded as a change from the normal functioning.  

The human body acts pretty like a machine, being made up of different systems each with a unique function, and these systems are interconnected as we shall be seeing in future.  Although we have started with the system level, it is good to note that system before the body systems, there are other body organizations that we shall be discussing later as I have already put forward the order of organization.

First, the human body just like an engine, must have air circulating through it and this is the function of the respiratory system.  It is only when the body tissues get enough oxygen, that energy production will be possible.  But it is not oxygen alone but also, it must get rid of the accumulating carbon dioxide via the same respiratory system.  Otherwise reduced or no oxygen supply will lead to death of body tissues and it is even worse when it comes to brain cells and cells of the heart muscles as we shall be seeing in our discussions relation to such systems.  If you would like to get details of the way air circulates, click on the link below.

EXCHANGE OF GASES IN THE HUMAN BODY

As this air enters through the nostrils, it enters the pharynx, to the bronchi, through the bronchioles all the way to the respiratory surface which is a complex network of air sacs where gaseous exchange takes place, and we call these alveola sacs.  

One major component; Oxygen, will be absorbed into the body to be used for cellular respiration by diffusion from the alveola sacs into the blood capillaries.  The end products of oxygen use and energy production then will generate Carbon dioxide, which will be eliminated via the same route from blood capillaries into the alveola sacs.  The respiratory system therefore remains one of the most important and vital systems in life and any compromise in it may result into immediate death of body tissues.

GETTING ALONG OF NUTRIENTS AND CHEMICALS OF LIFE:  As we have seen, the respiratory system does not work alone, but being in conjunction with the Cardiovascular system, the origin of blood supply and circulation.  The cardiovascular system is simply a combination of the heart as the pump, blood vessels that carry blood and blood it's self.  It is this system that is responsible for transportation of product of the earlier talked of, the respiratory system and other nutrients in the body such as glucose and molecules of metabolism.  Without proper functioning of the Cardiovascular system, the body will be deprived of oxygen and glucose especially the vital organs such as the brain and the individual can easily go into a comma state or what we can call in short, altered level of consciousness (ALOC).

THE ROLE OF THE CENTRAL NERVOUS SYSTEM:  All the systems in the body are essential but not as important as the Central nervous system because, it controls functioning of almost all the others irrespective of whether one is arousable or asleep.  The central nervous system will remain function even when we are asleep in order for the breathing and blood circulation to continue and although our bodies may run out of glucose for some few minutes, the CNS cells will start to die out just after few seconds of hypoglycemia and recovery may not be possible.  You can click here to read more about metabolic profile of organs and then here to read about consequences of hypoglycemia.

Basically, the central nervous system consists of the brain, the spinal cord, and the peripheral nerves.  Unlike in the respiratory system where we are dealing with gaseous exchange and in the cardiovascular system where we are dealing with blood circulation, in the central nervous system we are dealing with the electrical transmission in the body, and generation of nerve impulses is the common scenario here.  We have talked a lot about nerve impulse propagation and transmission in our previous discussion and you can read about them from the link below; Generation and conduction of a nerve impulse.

RELATED;

1.  DYNAMICS OF INFECTIOUS DISEASES

2.  DYNAMICS OF DRUGS IN THE HUMAN BODY

3.  PHYSIOLOGY OF THE CARDIOVASCULAR SYSTEM

4.  ALTERED LEVEL OF CONSCIOUSNESS

5.  METABOLIC PROFILE OF ORGANS

6.  HYPOGLYCEMIA

7.  COMPOSITION OF BLOOD

8.  THE HUMAN RESPIRATORY SYSTEM

9.  GENERATION AND PROPAGATION OF A NERVE IMPULSE