Systèmes nerveux

24 Interesting Facts About the Nervous System

To access the five senses, the human body relies on a highly specialized system. This system interprets information related to sight, smell, taste, hearing, and touch, granting the body a degree of autonomy or triggering a cascade of reactions. Without this complex system, the body would lack the senses and the critical framework needed to live a meaningful life. This system is called the nervous system.

1. The Nervous System is Divided into Two Main Parts

Like many bodily systems, the nervous system is subdivided to perform its functions effectively. It consists of two primary parts: the central nervous system (CNS) and the peripheral nervous system (PNS). Additionally, the PNS is further divided into the somatic nervous system and the autonomic nervous system.

2. The Nervous System Has Basic Functional Units

The basic functional unit of the nervous system is the neuron, with an estimated billions scattered throughout the system, particularly concentrated in the brain. Neurons can be likened to wires, composed of a long cable called the axon and shorter, thicker extensions known as dendrites. This complex acts like a cable, transmitting impulses or messages to the brain or from the brain to the spinal cord, a process known as the flow of nerve impulses.

The communication and interaction between the human body and its environment are not magical but are the

result of billions of neurons working in tandem with the brain.

3. The Brain Consumes More Energy Than Any Other Organ

The brain, the cornerstone of the central nervous system, is a major energy consumer. It alone uses over 20% of the body’s total energy production, whether the body is awake or asleep. This energy is utilized to ensure the transmission> transmission of nerve impulses. Scientific research agrees that the brain operates continuously, even during sleep.

4. Involuntary Reflexes Bypass Brain Control

Certain reflexes in the nervous system, known as involuntary reflexes, are neither interpreted nor processed by the brain. These automatic reactions do not require conscious thought. For example, you instinctively pull your hand away after accidentally touching a hot kitchen utensil. These reactions are controlled by reflex arcs, bypassing the brain.

5. The Brain Contains an Enormous Number of Neurons

Scientific consensus estimates the brain contains approximately 100 billion neurons. Counting them could take 3,000 years. Whether you’re sleeping, walking, laughing, running, thinking, eating, reading, or speaking, tiny electrical and chemical impulses travel between neurons across a vast network of billions of neural pathways.

6. The Brain’s Structure is Not Fixed

The brain’s structure is not static; it adapts as new knowledge is acquired. The brain of a fetus differs significantly from that of an infant, young child, or adult. This is due to the learning process, which fosters the creation of new neural connections. The more you learn, the more connections form, strengthening memory. This explains why stimulating children, even from the fetal stage, is recommended.

7. Neurons Cannot Divide

Unlike other cells, neurons lack the ability to undergo cell division (mitosis), meaning they cannot grow, multiply, or repair themselves. This is why damage to the nervous system is often irreversible, leading to loss of function. Current research is exploring the potential of neural stem cells or pluripotent stem cells for neuron repair and regeneration

8. The Brain Shrinks with Age

As the body ages, the brain shrinks. In a fetus, neurons develop at a rate of 250,000 per minute. After birth, an infant’s brain triples in size during the first year, continuing to grow until age two. The period from conception to 24 months is called the “first 1,000 days”, a critical window for brain development. However, after adulthood, the brain loses about 1 gram of weight annually, resulting in fewer neurons in old age, which can lead to memory lapses, loss of time perception, and diminished senses like taste, smell, hearing, and vision.

9. Potassium and Sodium are Essential Ions

Two ions, potassium (K+) and sodium (Na+), are critical for nervous system function, alongside calcium (Ca2+) and chloride (Cl–). Neurons communicate via electrochemical impulses, and these charged chemical substances (ions) facilitate this process.

10. Electroencephalogram (EEG) and the Nervous System

An EEG is a medical test used to measure the brain’s electrical activity over a specific period. It records the frequency and amplitude of brain waves in microvolts, allowing doctors to interpret brain patterns without causing discomfort.

11. Neuron Loss in Aging Doesn’t Mean Cognitive Decline

Although the brain loses neurons starting at age 20 due to senescence (aging), reaching a loss of about 10% by age 75, this does not equate to a 10% loss in cognitive ability. The remaining neurons continue to form new connections to compensate for the loss.

12. The Nervous System Has Limited Repair Capacity

Unlike skin or bones, which heal readily, the nervous system has limited regenerative and repair capabilities.

While research is ongoing, no definitive breakthroughs have been achieved. Solving this could lead to cures for currently intractable neurological disorders.

3. The Role of Glial Cells

The myelin sheath, a lipid-rich membrane surrounding neurons and nerve fibers, accelerates nerve impulse transmission through saltatory conduction.

Myelin also insulates and protects nerve fibers, preventing signal loss. Glial cells support myelin’s role, ensuring efficient and rapid signal transmission

14. Specialized Nerves for Vision

The optic nerves are dedicated to transmitting impulses from the eyes to the brain. The left optic nerve sends signals to the right side of the brain, and the right optic nerve to the left side.

The brain integrates these signals to interpret the image formed on the retina.

15. Brain Composition Varies by Sex

The brain’s composition differs between sexes. Women’s brains have a higher proportion of white matter (neural connections), while men’s brains are richer in gray matter (neuron cell bodies). Women have about 10 times more white matter, while men have nearly 6.5 times more gray matter. Gray matter processes information, while white matter connects processing centers.

16. Brain Weight: Female vs. Male

Through 8,000 autopsies, scientists determined that the average female brain weighs 1,198 grams, while the male brain weighs 1,336 grams.

Men’s brains lose about 2.2 grams annually, and women’s lose 2.7 grams annually.

17. The Nervous System Regulates Body Temperature

The hypothalamus, a small brain region, regulates body temperature. When the body feels cold, nerve impulses signal the brain to initiate warming mechanisms, maintaining temperature.

This is part of homeostasis, which keeps physiological parameters within life-compatible limits.

18. Mirror Neurons Are Real

In primates, mirror neurons mimic the actions of others, explaining why you might yawn, laugh, sneeze, or feel the urge to use the bathroom after seeing someone else do so.

These neurons make simple actions contagious.

19. Stress Impacts Brain Development

In growing children, toxic stress can alter brain structure and function, potentially causing severe developmental issues.

This stress often arises without supportive parents or guardians to help manage stressful situations positively.

20. The Nervous System Has Receptors

To interpret environmental signals, the nervous system relies on receptor neurons at nerve endings.

These receptors process signals in milliseconds, triggering appropriate responses, such as withdrawing a hand from a hot object.

21. Composition of the Peripheral Nervous System

The peripheral nervous system comprises 43 pairs of nerves: 12 pairs connect directly to the brain, and 31 pairs connect to the spinal cord.

22. Headaches Originate Outside the Brain

Contrary to popular belief, headaches do not occur inside the brain. Most headaches result from irritation of nerves and blood vessels in the scalp and neck. Swelling and pinching of blood vessels irritate surrounding nerves, which send pain signals to the brain.

23. Functions of the Autonomic Nervous System

The autonomic nervous system has two key roles: it responds to emergencies and stress by triggering fight, flight, or freeze responses and manages normal functions like digestion.

Composition of the Treatment

The nervous system is a complex network of nerves and neurons that transmit signals between the brain, spinal cord, and body, controlling essential functions such as:

Motor skills
Balance
Perception (sensitivity, vision, hearing, smell)
Cognitive functions
Emotions
Behavior

It consists of the central nervous system and the peripheral nervous system. Once information is processed, the brain sends impulses to produce reactions to stimuli.

Treatment Composition:

GABA: Regulates brain activity by inhibiting overstimulation, aiding relaxation (gamma-aminobutyric acid).
Complete Nervous System
Autonomic Nervous System: Manages involuntary functions like breathing and digestion, divided into the sympathetic and parasympathetic systems.
Nerve Regeneration Frequency: Uses isochronic tones and binaural beats.
475 Hz Myelin Sheath: Enhances nerve impulse conduction and protects nerve fibers.
Central Nervous System Bioresonance: Targets infections in the brain and spinal cord, which control perception, movement, sensation, thought, speech, and memory.
General Nervous System
Peripheral Neuropathy Healing Frequency: Addresses conditions often caused by diabetes or excessive alcohol consumption.
Parasympathetic System: Conserves and restores, slowing heart rate, lowering blood pressure, and aiding digestion and waste elimination.
Spinal Cord and Cerebral Cortex Regeneration: Supports reflexes and signal conduction between nerves and the brain.
Alpha-Lipoic Acid: Treats neuropathy and nerve-related pain in the feet and legs.
Potassium & Sodium
Pluripotent Stem Cells: Adapts to bodily needs, a promising research avenue.

Subliminal Section (Preferential Rate):

This Liberor Nervous System Treatment is tailored for me:

I accept its benefits for motor skills, balance, perception (sensitivity, vision, hearing, smell), cognitive functions, emotions, and behavior.
It regulates GABA and the autonomic nervous system, improving breathing and digestion.
The sympathetic and parasympathetic systems function perfectly.
My entire nervous system is fully regenerated.
My neuropathy is completely healed.
My myelin sheath fully protects nerve fibers, ensuring efficient nerve impulse conduction.
My central nervous system is free of infections.
My spinal cord and brain fully perform their roles.
My brain enhances perception, movement, sensation, thought, speech, and memory.
If I have diabetes, this treatment aids its elimination.
My parasympathetic system conserves, restores, slows heart rate, lowers blood pressure, and supports digestion and waste elimination.
My spinal cord is fully regenerated.
My cerebral cortex is optimal, enabling better decision-making in conflicts or errors.
Alpha-lipoic acid treats neuropathy and nerve pain.
Pluripotent stem cells act throughout my body, especially in the brain.
Everything is going very well.
I love myself.