Understanding the Anatomy of a Concussion: From Axons to the Blood-Brain Barrier
This blog provides a clear overview of brain anatomy and how concussions affect different regions. Kansas City patients will learn which areas of the brain are most vulnerable, how injuries impact function, and why understanding brain anatomy is important for recovery and treatment planning.
Lance Stevenson, DC
6/11/20262 min read
Understanding the Anatomy of a Concussion: From Axons to the Blood-Brain Barrier
A concussion is more than a simple bump on the head. It triggers complex microscopic injuries inside your brain that can disrupt thinking, memory, mood, and physical function. Two of the most important areas affected are:
Axons: the long, thread-like fibers that transmit signals between brain cells
Blood-Brain Barrier (BBB): the protective layer around brain blood vessels
Understanding how these structures are injured explains why concussion symptoms can persist even when standard imaging looks normal.
Axonal Injury: When Brain Communication Breaks Down
Axons act like telephone wires, sending messages between different brain regions. During a concussion:
Sudden twisting, stretching, or impact causes axons to shear or become damaged
This disrupts communication across brain networks
Known as diffuse axonal injury (DAI), it is a common cause of post-concussion cognitive, emotional, and sensory problems
Even mild axonal damage can affect memory, focus, processing speed, and emotional regulation.
The Blood-Brain Barrier: Your Brain’s Protective Shield
The BBB controls which substances can enter the brain from the bloodstream. After a concussion:
The barrier becomes temporarily leaky
Inflammatory cells and molecules can enter brain tissue
This triggers neuroinflammation, contributing to headaches, fatigue, mood changes, and sensitivity to light or noise
Why These Injuries Are Hard to Detect
Both axonal injury and BBB disruption are microscopic. Standard imaging like CT scans or routine MRIs often appear normal, which can make concussions frustrating to diagnose. Accurate assessment relies on:
Clinical evaluation
Symptom tracking
Specialized testing when needed
Why Expert Care Makes a Difference
At our Kansas City clinic, Dr. Lance Stevenson, DC provides focused evaluation and treatment that targets:
Axonal healing
Reduction of neuroinflammation
Support for BBB repair
Restoration of overall brain function
Early, individualized care helps patients recover faster, reduces the risk of lingering symptoms, and improves return-to-work, school, and daily life.
Schedule a Free Concussion Consultation
If you’ve been in a car accident or suffered a head injury in Kansas City and are experiencing post-concussion symptoms, don’t wait. Call 816-226-7476 to schedule your free evaluation with Dr. Lance Stevenson, DC, and take the first step toward recovery.
Been in an Accident? Start Here.
Call us today for a free consultation or with any questions.
Expert Personal Injury Care
Whiplash Chiropractor in Kansas City
Lance@ChiroKC.com
816-226-7476
© 2026 Lance Stevenson, DC, LLC. All rights reserved.
Disclaimer: The content provided on this page is for informational and educational purposes only and is not intended as a substitute for professional medical, legal, or insurance advice. While every effort is made to provide accurate and up-to-date information, it should not be relied upon as the sole basis for decisions regarding your health, legal matters, or insurance claims. Please consult with your healthcare provider, attorney, insurance company, or other relevant professionals for personalized guidance tailored to your specific situation.
1010 Carondelet Dr., Suite 416
Kansas City, MO 64114