List the ascending tracts that are ipsilateral-or cell bodies stay on the same side.
T6 or below
The origin of the fasciculus gracilis is?
T5-T6 and above
The origin runs where of the fasciculus cuneatus is?
All cord levels, enlarging as it ascends the cord.
The levels that the spinothalamic tract are found at are?
This tract does NOT run below L3 and is carried up the gracilis and synapses in Clarke's Nucleus
Which tracts share the same functions of simply being major pathways carrying such sensations(partic. from distal ends of extremities) such as1. Discrimination of touch(2pt.) and Vibratory sensations 2. Kinesthetic sensation(conscious proprioception)
cuneatus, gracilis (fasciculus)
Romberg's test is considered a function of what two tracts?
Name the primary tract (other ascending tracts do too) that is formed from axons that come from cell bodies in the gray horns of the cord.
in the cord's gray laminae
The dorsal root fibers bringing sensations into the cord must synapse where?
Anterior and Lateral funiculi border
What is the location of the spinothalamic tract?
What is another name for the anterior and lateral funiculi border?
Name the tract that runs to all cord levels and will naturally enlarge as it ascends the cord.
Mostly contralateral fibers, Spinothalamic tract
Name the type of fibers and what tract crosses gradually in the anterior region and abruptly in the lateral extremes.
(crosses) gradually in the anterior region, (abruptly crosses) in the lateral extreme
Name where the spinothalamic tract crosses first, and then abruptly crosses after.
functions of spinothalamic tract
what is the connection if any, (and tract name) this tract has with Pain and Thermal Input, and Light Touch.
Especially in the lateral funiculus, anterior funiculus, spinothalamic tract
Functions of pain and thermal input, and light touch occur where and in what tract?
The spinothalamic tract, the anterior and lateral spinothalamics
This tract used to be considered two seperate tracts, but now is considered one continuous tract, even though some functional variation is recognized at the extremes.(name the tract now, and give the name(s) it used to be as well.)
In what way are the spinothalamic tracts very important?
Analgesia, thermoanesthesia, spinothalamic tract, opposite side of body
Lesions here in this tract lead to________(pain loss), and ___________(temperature loss) to where?
in the thalamus (VPL Nuclei)
The fibers of the spinothalamic tract terminate where?
Thalamus, higher cortical centers
Some appreciation for pain and thermal sensation may be established where? Relay to ______is necessary for complete conscious appreciation?