Spinal Cord Flashcards
Function of Spinal Cord
- Recieve Sensory Information from Body and Integrates Information
- Sends Motor Commands to muscles and glands
- Carries ascending and descending tracts that convey information to and from brain
- Coordinates Reflexes
Meningeal Layers of Spinal Cord
Dural Mater, Arachnoid Mater, and Pia Mater
How is Dural Sac anchored to VVertebral Column
Film Terminale Externum
How is spinal Cord anchored to dural sac
Denticulate Ligaments
Components of Typical Spinal Nerve
Motor:
- Somatic Motor: Innervates Skeletal Muscle
- VIsceral Motor: Innervates Smooth, cardiac, and glandular epithelium
Sensory:
- Somatic Sensory Nerurons: Sensory information from body
- Visceral Sensory: Sensory Information from Viscera
Sensory
- 1-4: Processing exteroceptive sensation
- 5-6: Processing Visceral and Proprioceptive sensations
Laminae Associated with Anterior Horn and their function
Laminae 8-9: Motor Neurons that innervate skeletal muscle
Laminae Associated with Intermediate Zone and their function
Lamina 7: Preganglionic visceromotor cells and cells that project proprioceptive information to cerebellum
What is Lamina x
Glial Cells
Where is Posterior Funiculus Located
Between Posterior medial sulcus and posterolateral sulcus
Where is Anterior Funiculus Located
Between Anterior median fissure and anterolateral sulcus
Where is the Lateral Funiculus Located
Between Posterolateral sulcus and anterolateral sulcus
What kinds of tracts are in Posterior Funiculus
Ascending
What kinds of tracts are in Anterior Funiculus
Descending Tracts
What kinds of tracts are in Lateral Funiculus
Both Ascending and Descending tracts
Major Tracts in Posterior Funiculus
Gracile Fasiculi and Cuneate Fasciculi
What does the Gracile and Cuneate Fasciculi carry
Proprioceptive, tactile, and vibratory information from body to higher centers 
What tracts are located in Lateral Fasiculi
Anterolateral System and Lateral Corticospinal Tract
What does the Anterolateral System Tract carry
Pain, temp, crude touch information from body to higher centers
What information foes Lateral Corticopspinal tract carry
Efferent information from motor cortex to motor neurons
Tracts in Anterior Fasiculus
Anterior Corticospinal Tract
What information is carried in Anterior Corticospinal Tract
Efferent motor neurons associated with postural control and balance
Which tract crosses at spinal cord level?
Anterolateral System
