The Spinal Cord

Key Notes:

What is the Spinal Cord?

• The spinal cord is a long, tube-like structure made of nerves.
• It runs from the brain down the back, inside the spine (vertebral column).
• It is a key part of the central nervous system.

Function of the Spinal Cord

• It sends messages between the brain and the rest of the body.
• It controls reflexes, like pulling your hand away from something hot.
• The spinal cord allows the brain to send signals for movement, sensation, and control of organs.

Structure of the Spinal Cord

• The spinal cord is protected by the bones of the spine, called vertebrae.
• It is divided into segments, each connected to different parts of the body through nerves.
• The nerves branching from the spinal cord carry messages to specific areas like the arms, legs, and organs.

Connection to the Brain

• The spinal cord is connected to the brain at the brainstem.
• Together, the brain and spinal cord make up the central nervous system (CNS).

Importance of the Spinal Cord

• Damage to the spinal cord can affect movement, sensation, and body functions.
• Keeping the spinal cord healthy is important for overall body coordination and reflexes.

Protection of the Spinal Cord

• The vertebrae form a protective barrier around the spinal cord.
• The spinal cord is also surrounded by cerebrospinal fluid, which cushions and protects it from injury.

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