What is the cross section of spinal cord?
What is the cross section of spinal cord?
A cross section of the spinal cord reveals white matter arranged around a butterfly-shaped area of gray matter. The white matter consists of myelinated fibres, or axons, that form nerve tracts ascending to and descending from the brain. The white matter is grouped into discrete sectors called funiculi.
Where do spinal cord tracts cross?
The spinal cord is a central nervous system structure that extends inferiorly from the brain stem and into the lower back. Throughout its length, it is enclosed within the spinal column, with the cord passing through the vertebral foramen of the vertebrae.
What is the functional anatomy of the spinal cord?
The spinal cord (SC) is the anatomical structure of the central nervous system (CNS) serving as a processing and relay station from and to the peripheral nerves. This cylinder of gray and white matter receives motor inputs from the brain and a wide range of sensory information from the rest of the body.
What is the general structure of spinal cord?
The spinal cord is a long, thin, tubular structure made up of nervous tissue, which extends from the medulla oblongata in the brainstem to the lumbar region of the vertebral column. It encloses the central canal of the spinal cord, which contains cerebrospinal fluid….
| Spinal cord | |
|---|---|
| TA2 | 6049 |
| FMA | 7647 |
| Anatomical terminology |
What is the structure and function of spinal cord?
Spinal cord and nerves: The spinal cord is a column of nerves that travels through the spinal canal. The cord extends from the skull to the lower back. Thirty-one pairs of nerves branch out through vertebral openings (the neural foramen). These nerves carry messages between the brain and muscles.
What is the cross section of the spinal cord?
Spinal Cord Segments – Cross-sectional Anatomy. The spinal cord is made up of 31 segments. Each segment gives rise to a pair of spinal nerves. In cross-section (c.s.), the segments appear to be divided into two zones. The outer zone contains many myelinated axons that run up and down the spinal cord. Myelin is mostly lipid and light in color.
Where is the lateral horn in the spinal cord?
The lateral horn of the spinal cord is the small lateral projection of grey matter located between the dorsal horn and ventral horn and contain the neuronal cell bodies of the sympathetic nervous system. Article:
What are the most common types of spinal cord injuries?
According to the National Spinal Cord Injury Statistical Center (NSCISC), the two most common types of spinal cord injuries are incomplete tetraplegia and paraplegia, with incomplete spinal cord injuries accounting for more than 65% of all SCIs.
What are the sections of the spinal column?
The human spine or vertebral column is composed of individual vertebrae, sections of bone that house the spinal cord, separated by soft jelly discs. There are five sections in the vertebral column – cervical, thoracic, lumbar, sacrum, and coccyx (or tailbone).