Book: chp 13
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This CT anchors the spinal cord in place so it is not jostled by body movements.
- filum terminale
At its inferior end, the spinal cord tapers into this.
- conus medullaris
The spinal nerves lie in the ______ foramina, from which they send lateral branches throughout the body.
Thisis the collection of nerve roots at the einferior end of the vertebral canal. It is where the lumbar and sacral nerve roots descend a longer distance before reaching their corresponding intervertebral foramina.
T or F: the spinal cord does not reach all the way to the coccyx because during the 3rd month of development, it grows more slowly then the caudal vertebral column
True: until the 3rd month of development, the spinal cord does extend all the way to the coccyx.
What does the spinal cord form from?
This is the clinical term used to indicate the region of the spinal cord from which the axonal processes that form a given spinal nerve emerge.
spinal cord segment
T or F: The spinal cords are located inferior to where their spinal nerve emerge through the intervertebral foramina.
False: they are located superior to where their spinal nerve emerge.
These two grooves run the left length of the spinal cord and partly divide it into right and left halves.
dorsal (posterior) median sulcus and the ventral (anterior) median sulcus
These fibers in the spinal cord are white matter fiers that carry information from one side of the spinal ord to the other.
This term describes how the white matter in the spinal cord is divided into three arts, also named "long ropes"
What are the 3 parts of funiculi in the white matter?
- dorsal funiculus
- ventral funiculus
- lateral funiculus
The crossbar of graymatter where it is shaped like an H is called ___a___ and is composed of ____b____ axons that cross from one side of the CNS to the other.
- a) gray commissure
- b) unmyeliated
In the thoracic and superior lumbar segments of the spinal cords, these lateral gray matter columns are present.
lateral horns (pg.411)
This gray matter horn consists entiely of interneurons that eceive information from sensory neurons outside the spinal cord.
Interneurons in the dorsal horns receive information from sensory neurons outside the spinal cord in ____a____ ganglia and whose axons reach the spinal cord ia the ___b___ roots
- a) dorsal root
- b) dorsal
This gray matter horn contain cell bodies of motor neurons that send their axons out of the spinal cord to suply muscles and glands.
This gray matter horn is the largest in the cervical and lumbar segments of the cord, which innervate the upper and lower limbs.
This is external to the spinal dura and is a large space filled with cushioning fat and a netwok of veins in the spinal cord. It is where anesthetics are often injected into.
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