Proprioception. Flashcards
Conscious proprioception is transmitted to what part of the brain?
The cortex (somatosensory cortex).
Unconscious/general proprioception is transmitted to what part of the brain?
The cerebellum.
Proprioceptive impulses will always travel up what spinal cord tract?
The dorsal column.
What neurons are used by proprioceptive impulses?
1st, 2nd and 3rd order neurons.
Where do the 2nd order neurons for conscious proprioception will enter the dorsal column?
At the ipsilateral dorsal funiculus.
Are the neurons for conscious proprioception ipsilateral or contralateral?
Ipsilateral as they cross over at the medulla.
Where do the neurons for conscious proprioception cross over?
In the medulla.
Where do the neurons for conscious proprioception run to after they have crossed over at the medulla?
The somatosensory cortex.
Where will the 2nd order neurons for conscious proprioception synapse into 3rd order neurons?
In the medulla.
Where do the 2nd order neurons for unconscious proprioception travel to in the brain?
The ipsilateral cerebellum.
Are the 2nd order neurons for unconscious proprioception ipsilateral or contralateral?
They are ipsilateral for the entire journey.
What tract do the 2nd order neurons for unconscious proprioception use within the spinal cord?
The spino cerebellar tract and the lateral funniculus.
What kind of proprioception is involved in normal gait?
Unconscious proprioception.
What kind of proprioception is involved in postural responses?
Conscious proprioception.
How can we determine if there is neurological damage to an animal?
By testing their postural responses.
E.g. We can lift a dogs back 2 legs off the ground and then push the animal forward. The dog should respond to this by moving its front legs forward so that it does not crash into the ground. If the front legs do not move forward then there may be an issue with the dogs proprioception.
