What are 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 does the spinal cord 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.
Does the spinal cord go through the sacrum?
There is no spinal cord in the sacrum region; however, sacral nerve damage in the sacral spine may have symptoms similar to spinal cord damage. Typically, with a sacrum injury or sacrum fracture: Injuries generally result in some loss of function in the hips and legs.
What is the function of cross section of spinal cord?
Cross-section of the spinal cord These extend from the spinal cord to provide sensation to different areas in the body. Key areas of a cross-section of the spinal cord include: Gray matter: The gray matter is the dark, butterfly shaped region of the spinal cord made up of nerve cell bodies.
What is GREY and white matter in spinal cord?
The grey matter also extends from the brain into the spinal cord. The grey matter creates a hornlike structure throughout the inside of the spinal cord while the white matter makes up the surrounding sections of the spinal cord. The grey matter does extend to the spinal cord to make signaling more effective.
What does grey matter in spinal cord do?
The grey matter includes regions of the brain involved in muscle control, and sensory perception such as seeing and hearing, memory, emotions, speech, decision making, and self-control. The grey matter in the spinal cord is split into three grey columns: The anterior grey column contains motor neurons.
What part of the body does the sacral spine control?
The sacral region is home to the control center for pelvic organs such as the bladder, bowel, and sex organs. Sexual function is a concern, especially in men who experience sacral spinal nerve injuries.
What part of the spinal cord has the most white matter?
The amount of white matter is greatest at cervical levels and least at sacral levels. This is because ascending and descending fibers from and to all levels must pass through the cervical cord.