Lecture 63 Flashcards
How many pairs of spinal nerves are there?
31
Sensory/afferent information enters the SC via the
dorsal/posterior surface
The vertebrae of the SC are divided into how many regions?
5
What are the five regions of the spinal cord?
cervical, thoracic, lumbar, sacral and coccygeal
How many vertebrae are contained in each region?
8 in cervical, 12 in thoracic, 5 in lumbar and sacral, 1 in coccygeal
Enlargements of the spinal cord are in which regions?
the cervical and lumbar
The dorsal root ganglion contains the cell bodies of multi or unipolar sensory neurons?
unipolar
From the inside moving out, what are the three meninges?
pia mater, arachnoid mater and dura mater
The gray matter of the spinal cord is composed of
neuronal cell bodies, dendrites and glia
How are ascending pathways named?
spino-destination (ex - thalamus would be “spinothalamic”)
What are the four major ascending tracts?
The dorsal columns and the lateral and anterior spinothalamic pathways
The posterior spinocerebellar tract carries what kind of information?
proprioception (position/movement)
The dorsal columns are discriminative to the
somatosensory cortex
The dorsal columns convey information on
fine touch, pressure and conscious aspects of proproception
spinothalamic tracts convey information concerning
usually unpleasant stimuli like pain and deep pressure
