Human Spinal Cord

Hi friends, Today we are going to discuss about Spinal Cord in human body.

Spinal cord

• The spinal cord is a support system of the body
• In human body the spinal cord is a long cylinder of nerves that runs from the base of your brain through the vertebral canal through the backbone.
• It is a part of the central nervous system (CNS) along with the brain.
• It is a divided into different segments.
• In that each segment contains a pair roots made out of nerve fibres. The spinal cord is (in yellow) connects the brain to nerves throughout the body.

Importance spinal cord

• Spinal Cord is important part in body because without a spinal cord your brain and your body couldn’t communicate with each other.
• The spinal cord is the pathway for impulses from the brain to the body and from the body to the brain, and .
• These impulses are the different signals our brain sends and receives from our bodies.

Physiology of the spinal cord

• what makes it work. The spinal column consists of the bones that contain and protect the spinal cord.
• The bones are of the spinal column or vertebrae help hold us up and together.
• The spinal cord extends from the brain.

What is the structure of spinal cord?

The structure of spinal cord is a cylindrical structure of nervous tissue composed of white and gray matter, is uniformly organized and is divided into four regions.

• Cervical (C)
• Thoracic (T)
• Lumbar (L)
• Sacral (S)

1) Cervical

• In the spinal cord the cervical portion of the spine comprises the top portion of the spinal cord, comprising seven vertebrae (C1 – C7) in the neck.
• They closer to the brain and affecting a larger portion of the body, cervical spinal cord injuries are typically the most severe variety of spinal cord injury.

2) Thoracic

• Thoracic spin – the main function of the thoracic spine is to hold the rib cage and protect the heart and lungs.
• The T1 to T12 are twelve thoracic vertebrae numbered T1 to T12.
• The motion of range in the thoracic spine is limited.

3) Lumbar

• The Lumbar spine – In that the main function of the lumbar spine is to bear the weight of the body.
• LA to L5 are the five lumbar vertebrae are numbered.
• These vertebrae are larger in size to absorb the stress of lifting and carrying heavy objects.

4) Sacral

• The sacral spine (sacrum) is the located below the lumbar spine and above the tailbone, which is known as the coccyx.
• 5 bones that are fused together make up the triangle-shaped sacrum, and these bones are numbered S-1 to S-5.

Functions Of Spine

• The spine protect the spinal cord, nerve roots and several of the body’s internal organs.
• The spine provide structural support and balance to maintain an upright posture.
• Enable flexible motion.

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