Overview of the Spinal Cord Anatomy
The spinal cord is housed by the spinal column. Without the spinal column, the spinal cord would be vulnerable to injury. Furthermore, the spinal cord anatomy is surrounded by cerebrospinal fluid which serves as a shock absorber and nutrient-carrying modality. The diameter of the spinal cord is about the size of a finger and is composed of 33 spinal cord segments. These segments are named after their location and corresponding region of the spinal column.
- Cervical nerves – 8 cervical segments
- Thoracic nerves – 12 thoracic segments
- Lumbar nerves – 5 lumbar segments
- Sacral nerves – 5 sacral segments
- Coccygeal nerves – 3 coccygeal segments
The spinal cord basically has two tracts which are the descending and ascending spinal tracts. The descending tract carries neural impulses from the brain. These include impulses of controlling movement of the muscles. On the other hand, the ascending tract carries neural impulses to the brain which include pain, awareness of body parts’ position, temperature, touch, hearing, and other information from the senses.
General Characteristics of the Spinal Cord
Blood Supply of the Spinal Cord Anatomy
The spinal-cord anatomy is greatly complex and intricate in design. It has different segments that correspond to specific functions.
The general characteristic of the spinal-cord is to connect the brain with the rest of the body. Studying the spinal-cord anatomy would help you to better appreciate the complexity of the human body.