Spinal Cord Pathways and Reflexes

Revision sheet excerpt

Course Outline

  1. Spinal cord funiculi locations and functions
  2. Ascending spinal tracts and tract organization
  3. Spinothalamic pathway for pain and temperature
  4. Spinocervicothalamic conscious pathway
  5. Motor systems and upper versus lower motor neurons
  6. Descending extrapyramidal motor tracts
  7. Corticospinal tract and pyramidal system
  8. Spinal reflexes and reflex arc components
  9. Patellar, withdrawal, panniculus and perineal reflexes

1. Spinal cord funiculi locations and functions

Key Concepts & Definitions

  • Funiculi : Funiculi are the spinal cord white-matter columns that divide into dorsal, lateral, and ventral regions.
  • White matter tracts : White matter tracts are bundles of functionally related axons located within the spinal cord white matter.
  • Ascending pathways : Ascending pathways carry sensory information from spinal cord receptors toward the brain.
  • Descending pathways : Descending pathways convey motor commands from the brain to spinal cord neurons.

Essential Points

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Quiz preview

1. What do the dorsal, lateral, and ventral funiculi of the spinal cord represent?

2. Which statement best describes the general function of descending spinal pathways?

3. Which spinal cord column contains specific ascending sensory tracts in the dorsal white matter?

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Flashcards preview

Spinal cord funiculi — locations?

Dorsal, lateral, ventral columns.

Funiculi — function?

Contain white matter tracts for signal transmission.

Ascending tracts — role?

Carry sensory info toward the brain.

Descending tracts — role?

Convey motor commands from brain to spinal cord.

Spinothalamic pathway — function?

Transmits pain and temperature to the thalamus.

Third-order neuron — location?

In the thalamus, relays to cortex.

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The quiz contains 18 multiple-choice questions with detailed corrections and explanations for each answer. Ideal for testing your knowledge and identifying gaps.

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