Welcome to our blog post all about the human nervous system, the intricate and fascinating network that governs nearly every aspect of our daily lives. Whether you are a student, health enthusiast or simply curious about how your body works, this guide will provide you with a foundational understanding of your nervous system.
What is the Nervous System?
The nervous system is the body’s command centre, responsible for controlling and coordinating all bodily functions. It allows us to think, feel, move and respond to the world around us. This complex network is composed of two main parts: the central nervous system (CNS) and the peripheral nervous system (PNS).
CENTRAL NERVOUS SYSTEM (CNS)
The CNS consists of the brain and spinal cord. Think of it as the main control centre of the body.
The brain is the epicentre of thought, emotion, memory, and sensory processing. It is divided into several regions, each with specialised functions. For example, the cerebrum controls voluntary actions, the cerebellum coordinates movement and balance, and the brainstem regulates vital functions like breathing and heart rate.
PERIPHERAL NERVOUS SYSTEM (PNS)
The PNS connects the CNS to the rest of the body. It is divided into two main parts: the somatic nervous system and the autonomic nervous system.
Somatic Nervous System: This system controls voluntary movements and transmits sensory information to the CNS. It involves sensory neurons that convey information from sensory receptors (like those in the skin) and motor neurons that send signals to muscles.
Autonomic Nervous System: This system regulates involuntary bodily functions such as heart rate, digestion, and respiratory rate. It is further divided into the sympathetic and parasympathetic nervous system:
Sympathetic Nervous System: Prepares the body for “fight or flight” responses during stressful situations by increasing heart rate, dilating pupils, and inhibiting digestion.
Parasympathetic Nervous System: Promotes “rest and digest” responses, conserving energy by slowing the heart rate, constricting pupils, and stimulating digestion.
Importance of the Nervous System
The nervous system is crucial for survival and quality of life. It enables us to perceive the world, make decisions, and execute actions. It regulates vital processes, ensuring our bodies function smoothly without conscious effort. Additionally, it plays a key role in learning, memory, and emotions, which define our experiences and interactions.
Maintaining a Healthy Nervous System
To keep your nervous system health, consider the following tips:
- Balanced Diet: Ensure your diet is rich in essential nutrients, particularly omega-3 fatty acids, vitamins, and minerals that support neural health.
- Regular Exercise: Physical activity promotes blood flow to the brain and stimulates the growth of new neural connections.
- Adequate Sleep: Quality sleep is crucial for memory consolidation and overall brain health.
- Stress Management: Practice relaxation techniques such as meditation, deep breathing, and yoga to reduce stress levels.
- Mental Stimulation: Engage in activities that challenge your brain, such as puzzles, reading and learning new skills.
- Chiropractic Adjustments: Chiropractic care can benefit both the CNS and PNS by reducing nerve interference between the body, spinal cord, brain stem and brain itself. Meaning that the body is then able to better process all of the sensory information from throughout the body and control the body in a more optimal way.
References:
Bear, M. F., Connors, B. W., & Paradiso, M. A. (2015). Neuroscience: Exploring the Brain (4th ed.). Lippincott Williams & Wilkins.
Marieb, E. N., & Hoehn, K. (2018). Human Anatomy & Physiology (11th ed.). Pearson Education.
Purves, D., Augustine, G. J., Fitzpatrick, D., Hall, W. C., LaMantia, A.-S., & White, L. E. (2018). Neuroscience (6th ed.).
Kandel, E. R., Schwartz, J. H., & Jessell, T. M. (2013). Principles of Neural Science (5th ed.). McGraw-Hill.
Tortora, G. J., & Derrickson, B. H. (2014). Principles of Anatomy and (14th ed.). Wiley.
Martini, F. H., Nath, J. L., & Bartholomew, E. F. (2017). Fundamentals of Anatomy & Physiology (11th ed.). Pearson.
Harvard Health Publishing. (2021). Mind and Mood. Retrieved from Harvard Health
World Health Organization (WHO). (2020). Brain Health. Retrieved from WHO
Navid MS, Lelic D, Niazi IK, Holt K, Mark EB, Drewes AM, Haavik H. The effects of chiropractic spinal manipulation on central processing of tonic pain – a pilot study using standardized low-resolution brain electromagnetic tomography (sLORETA). Sci Rep. 2019 May 6;9(1):6925. doi: 10.1038/s41598-019-42984-3. PMID: 31061511; PMCID: PMC6502880.
