Tracts Flashcards
Four ascending tracts
Dorsal column medial leminiscal, Anterolateral system, Spinocerebellar, Cuneocerebellar
Modalities carried by the DCML
Fine touch, Vibration, Conscious propriception
Terminal point of DCML
Cerebral cortex
Point of dessucation of the DCML
Medulla
Divisions of the anterolateral system
Anterior and lateral spinothalamic
Modalities carried by the anterior spinothalamic tract
Crude touch, Pressure
Modalities carried by the lateral spinothalamic tract
Pain, Temprature
Terminal point of the anterolateral system
Cerebral cortex
Point of dessucation of the anterolateral system
1-2 levels higher than it joins
Modalities carried by the spinocerebellar tract
Unconscious proprioception of the lower limbs
Terminal point of the spinocerebellar tract
Cerebellum
Point of dessucation of the spinocerebellar tract
Anterior portion does twice in the spine, Posterior does not
Modalities carried by the cuneocerebellar tract
Unconscious proprioception of the upper limbs
Terminal point of the cuneocerebellar tract
Cerebellum
Point of dessucation of the cuneocerebellar tract
None
Division of the spinal cord in which first order neurones of the DCML tract from the lower limbs travel
Fasciculus gracilis
Division of the spinal cord in which first order neurones of the DCML tract from the upper limbs travel
Fasciculus cuneatus
Descending tracts
Corticospinal, Corticobulbar, Vestibulospinal, Reticulospinal, Rubrospinal, Tectospinal
Modalities carried by the corticospinal tract
Voluntary muscle control
Start point of the corticospinal tract
Cerebral cortex
Portion of dessucation of the corticospinal tract
Lateral (85%) portion in the medulla, Anterior (15%) portion in the spinal cord
Modalities carried by the corticobulbar tract
Voluntary muscle control in the head and neck
Start point of the corticobulbar tract
Cerebral cortex
Modalities carried by the vestibulospinal tract
Control balance and posture
Start point of the vestibulospinal tract
Vestibular nuclei
Point of dessucation of the vestibulospinal tract
None
Modalities carried by the reticulospinal tract
Coordinate autonomic movements
Start points of the reticulospinal tract
Medial portion from the reticular formation of the pons, Lateral portion from the reticular formation of the medulla
Point of dessucation of the reticulospinal tract
None
Modalities carried by the rubrospinal tract
Control flexor muscle tone
Start point of the rubrospinal tract
Red nucleus of midbrain
Point of dessucation of the rubrospinal tract
Brainstem
Modalities carried by the tectospinal tract
Control movement of eyes in relation to head
Start point of the tectospinal tract
Superior colliculus
Point of dessucation of the tectospinal tract
Midbrain
Tracts running through the internal capsule
Corticospinal, Corticobulbar, Anterolateral system