Spinal Cord (3) Flashcards
What conscious, high fidelity, somatotopically arranged tract senses the feeling when you stub your toe?
Lateral spinothalamic
What is associated with the lateral corticospinal tract?
Fractionated and isolated joint movements (voluntary arms, legs, fingers)
What is associated with the medial corticospinal tract?
Axial stability and postural control (voluntary trunk movement)
What is associated with the dorsal column medial lemniscus (DCML) system?
Discriminative light touch
Proprioception
Vibration
2 point discrimination
Stretch
Pressure
What is associated with the spinocerebellar tracts?
Unconscious proprioception
What is associated with the lateral spinothalamic tract?
Discriminative- nociception and temperature
Non discriminative- crude touch
What is associated with the anterior spinothalamic tract?
Non discriminative nociception
What structures of the spinal cord are motor?
Lateral corticospinal tract
Medial corticospinal tract
What structures of the spinal cord are sensory?
Dorsal column medial lemniscus
Lateral spinothalamic tract
Anterior spinothalamic tract
Spinocerebellar tract
What type of signs are associated with the cauda equina?
Lower motor neuron signs
Conus medullaris
End of the spinal cord (L1-L2)
What does it mean when you are aware your tag touched your skin?
Conscious
Where does conscious terminate?
Somatosensory cortex
High fidelity
Tells you about the accuracy of what you are feeling
Discriminative
Differentiation in feelings
What does it mean when you are aware that the tag on your skin is not the same feeling as stubbing your toe?
Discrimination
What are the 3 parts of the anterior spinothalamic tract?
Spinoemotional/limbic
Spinomesencephalic
Spinoreticular
What does the spinomesencephalic do?
Turns head towards pain
What does the spinoreticular do?
Arousal to pain
What can you not test in the lateral spinothalamic tract?
Crude touch
Spinocerebellum
Anteriospinothalamic
Why can you not test Crude touch, Spinocerebellum, and Anteriospinothalamic in the lateral spinothalamic tract as a PT?
Because they do not end up in the spinal somatosensory cortex
What do the upper motor neurons not leave?
Spinal cord
Where does the spinoemotional tract end?
Emotional areas of cerebral cortex
What is the spinoemotional tract responsible for?
Emotional response to pain
Where does the spinomesencephalic tract end?
Brainstem
What is the function of the spinomesencephalic tract?
Turn eyes and head towards pain
Where does the spinoreticular tract end?
Reticular formation of Brainstem
What is the function of the spinoreticular tract?
Mediates arousal systems and attention to nociception
What is the function of somatic motor neurons?
Transmit motor signals to skeletal muscles from brain
What is the function of somatic sensory neurons?
Transmit sensory input from skeletal muscles to brain
