Welcome to your ultimate guide to Nervous System Navigation, tailored to help you conquer your Level 3 Anatomy and Physiology exam with confidence. Today’s training about the nervous system will not only help make it more understandable but also relatable to your exam journey so you can pass with confidence.
In this 13-minute video and blog, we simplify the structure of the nervous system, and help you navigate the key components. We’ll also explore why understanding the nervous system is crucial for your upcoming exams and as a Fitness Professional.
Watch: Nervous System Navigation
Why the Nervous System Matters:
In your Level 3 Anatomy and Physiology exam, you’ll dive into the body’s structure and function. Imagine the nervous system as the body’s control tower.
It orchestrates everything, every movement, every sensation, every response.
Learning the nervous system is a key part (1 of 8 sections) of your Anatomy and Physiology exam, but your knowledge and understanding expand beyond the exam day. It’s not just about memorizing facts; it’s about understanding how stressors and stimuli translate into responses, adaptations, and, ultimately, results.
The Nervous System Structure… Simplified:
At its core, the nervous system is an intricate network of electrical impulses, sending, receiving, and processing messages throughout the body. Imagine it as a communication highway with three fundamental elements:
- Sensation: The Peripheral Nervous System (PNS) diligently gathers information from the environment, using sensory receptors and afferent neurons as its messengers.
- Integration – Interpretation – Analysis: The Central Nervous System (CNS), comprising the brain and spinal cord, deciphers this influx of information. It interprets and analyzes the data, deciding on the appropriate response.
- Response: The PNS, once again, steps into action, initiating the suitable response through efferent neurons. Think of it as a muscular contraction in response to a stimulus.
To remember the order of these three systems, use the ACE acronym:
A = Afferent Neurons (receives sensory information and take it to the CNS)
C = Central nervous system (interprets the data)
E = Efferent Neurons (create a response)
Components of the Nervous System: Easy Divisions for Easy Learning
Let’s simplify the divisions you need to know for your exam:
- The Central Nervous System (CNS): It includes the brain and spinal cord, the hub of all decisions and interpretations.
- The Peripheral Nervous System (PNS): This part extends beyond the spinal cord, transmitting messages to and from the CNS.
The Peripheral Nervous System subdivides into a further two sections:
- Autonomic: Communicates with internal organs
- Somatic: Communicates with sense organs and voluntary muscles
The Autonomic subdivision divides again into another two sections:
- Sympathetic Nervous System: responsible for arousal and preparing the system for activity and fight or flight
- Parasympathetic Nervous System: responsible for calming the system, recovery and digestion.
Remember, understanding the nervous system isn’t just about passing an exam. Understanding each component of anatomy and physiology will help you as a Fitness professional to achieve client results.
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Test your exam readiness with 3 Mock Questions
Look at the Multiple Choice Questions questions below and jot down your answer on scrap paper or as a note on your phone.
Then scroll down to reveal the answers.
1) Which part of the nervous system is responsible for bringing recovery and digestion?
C) Central Nervous System
2) Which neuron carries sensory information to the Central Nervous System?
A) Efferent Neuron
B) Somatic Neuron
C) Motor Neuron
D) Afferent Neuron
3) What part of the nervous system is responsible for the analysis and interpretation of data?
B) Peripheral nervous system
C) Central nervous system
D) Afferent neurons
Q1: Answer = B
Q2: Answer = D
Q3: Answer = C
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