MCQ Detailed View

The spinal cord is a major part of the central nervous system (CNS), running from the brainstem down the vertebral column. It is responsible for transmitting nerve signals between the brain and the rest of the body and coordinating reflex actions. Structurally, the spinal cord is divided into several regions based on where the spinal nerves exit the vertebral column.

The four main regions of the spinal cord are:

1. 
   

   Cervical region (neck area) – contains nerves controlling the head, neck, arms, and upper body.

   
   


2. 
   

   Thoracic region (upper and mid-back) – associated with the chest and abdominal muscles.

   
   


3. 
   

   Lumbar region (lower back) – supplies nerves to the legs and lower body.

   
   


4. 
   

   Sacral region (pelvic area) – associated with the bladder, bowel, and reproductive organs.

   
   

There is no specific region called "Pelvic" in spinal cord anatomy. Although the sacral region is located near the pelvis and controls pelvic organs, it is scientifically referred to as the sacral region, not "pelvic region". This makes Pelvic the incorrect option as it is not a recognized spinal cord region.

The spinal cord ends in the conus medullaris and continues as a bundle of nerve fibers known as the cauda equina. Each region consists of a specific number of spinal nerves that branch out and control different parts of the body.

Understanding spinal cord regions is important in neurobiology and medical science, as it helps in diagnosing spinal injuries and neurological disorders. Misidentifying the regions can lead to confusion in medical terminology.

Hence, the correct answer is Pelvic, as it is not officially classified as a region of the spinal cord.