CNS Flashcards
Where does the DCML pathway originate and terminate?
Origin: Dorsal Root Ganglion
Terminates: Post Central Gyrus
What is the function of the DCML pathway?
Fine Touch and Proprioception
Where does the DCML tract decussate?
Decussates after nucleus in Medulla Oblongata
What type of pathway is the DCML Pathway? Where is its cell body located?
Type: Ascending
Cell Body Location: Dorsal Root Ganglion
What are the three Meningeal Layers?
- Dura Mater
- Arachnoid Mater
- Pia Mater
What does the Spinothalamic Tract originate and terminate?
Origin: Interneurons in dorsal Horns.
Terminates: Somatosensory Cortex
What is the function of the Spinothalamic Tract?
Pain, Temperature and Crude Touch.
Where does the the Spinothalamic Tract decussate?
White Commissure (immediately)
Where is the cell body for the Spinothalamic Tract located? What type is it?
Cell Body Location: Dorsal Root Ganglion
Type: Ascending
Where does the Corticospinal Tract originate and terminate?
Origin: Pyramidal Neurons, Motor Cortex, Cerebrum.
Terminates: Spinal Cord motor Neurons.
What is the function of the Corticospinal Tract?
Axial and Limb Motor. Movement.
Where is the cell body for the Corticospinal Tract Located? And what type is it?
Cell Body Location: Ventral Horn
Type: Descending.
What are the three main neural pathways?
- Dorsal Column Median-Lemniscal Pathway
- Spinothalamic Tract
- Corticospinal Tract
What are the STRUCTURAL classifications of Neurons?
- Unipolar
- Bipolar
- Multipolar (most common)
What is the FUNCTIONAL classifications of Neurons?
- Sensory Neurons
- Motor Neurons
- Interneurons: Connect one Neuron to another
