Terminology
The result of tissue damage or potential damage
What is Nociception
These receptors respond to stimulus the entire time it is present.
What is a tonic receptor
The exit of spinal nerves from the spinal cord
What is the intervertebral foramen
The connection between the brain and the body and are comprised of bundles of axons
This spinal cord tract carries information regarding conscious awareness of the position of the body's upper and lower extremities
What is the Dorsal Column/Medial Lemniscus Tract
The relative position of the body in space without the use of vision
What is proprioception
This type of neuron carries information toward the CNS
What is afferent
Contains cell bodies of sensory nerves that are a part of the PNS
What is the dorsal root ganglion
Long axons that connect distant regions of the nervous system
What are projection neurons
This spinal cord tract carries conscious information regarding the feeling of acute pain and temperature
What is the Spinothalamic Tract
An area of the skin innervated by axons that enter the spinal cord through a single dorsal root
What is a dermatome
Respond to heating or cooling
What is a Thermoreceptor
Where the descending motor tracts exit the spinal cord
What is the Anterior horn
This pathway carries high-fidelity accurate details about stimulation and has somatotropic organization
What is conscious relay
The location of decussation for the Dorsal Column
What is the medulla
Allows us to investigate the world, move accurately, and avoid or minimize injuries
What is sensation
A sensory organ in muscles that responds to stretch
What is a muscle spindle
Innervates the ventral body wall and all parts of the limbs
What is the ventral rami
An example is feeling a feather go across your skin
What is light touch
An injury to this location of the spinothalamic tract results in ipsilateral sensory loss
What is the 1st order neuron
An area of the skin innervated by a single afferent neuron
What is Receptive Fields
Respond to tension in the tendon during a muscle contraction or when passively stretched
What is a golgi tendon organ
Innervates the skin and muscles of the back
What is the dorsal rami
This pathway carries low-fidelity diffuse sensations that are no somatotropically organized
What are divergent pathways
A lesion to this spinal cord tract would lead to contralateral loss sensory loss of discriminative touch at the level of the 2nd order neuron.
What is the dorsal column tract