Downloaded 25 times
Uploaded byMedical Knowledge
Spinal tracts and reflexes
The document summarizes the gross anatomy and functional organization of the spinal cord. It describes the location and functions of ascending tracts that transmit sensory information and descending tracts that control motor signals. The organization of sensory and motor pathways within the spinal cord and definitions of various reflex pathways are provided, including examples of monosynaptic and polysynaptic reflexes.
More Related Content
Similar to Spinal tracts and reflexes
Spinal tracts and reflexes
- 1. Gross Anatomy ofthe Spinal Cord
- 2. Functional Organization ofthe Nuclei within the Gray Matter of the Spinal Cord
- 3. Location of Ascendingand Descending Tracts of the Spinal Cord
- 4. Major Sensory orAscending Tracts Name Location Function Fasciculus gracilis Posterior Column Discriminative touch, proprioception Weight discrimination Fasciculus Cuneatus Posterior Column Same as FG Lateral Spinothalamic Lateral Column Pain and Thermal sensations Anterior Spinothalamic Anterior Column Itch, Tickle, Pressure, Crude touch sensations Posterior and Anterior Spinocerebellar Lateral Column Proprioceptors
- 5. Organization of Sensory orAscending Pathways
- 7. Motor or DescendingTracts of the Spinal Cord Name Location Function Lateral Corticospinal Lateral Column Muscles of the limbs, hands, and feet Anterior Corticospinal Anterior Column Muscles of the axial skeleton Corticobulbar Cerebral Peduncle Skeletal muscles of the head and neck via cranial nerves Rubrospinal Lateral Column Skeletal muscles of the limbs, hands, and feet Tectospinal Anterior Column Skeletal muscles of the head and eyes in response to visual stimuli
- 8. Motor or DescendingTracts of the Spinal Cord Name Location Function Vestibulospinal Anterior column Muscle for maintaining balance in response to head movements Lateral reticulospinal Anterior column Facilitates flexor reflexes Inhibits extensor reflexes Medial reticulospinal Anterior column Facilitates extensor reflexes Inhibits Flexor reflexes
- 11. Basic Organization ofa Reflex Pathway
- 12. Terms Associated with ReflexPathways • Spinal Reflexes // Cranial Reflexes • Somatic Reflexes // Visceral (Autonomic) Reflexes • Monosynaptic Reflex // Polysynaptic Reflex • Ipsilateral Reflex // Contralateral Reflex • Segmental Reflex // Intersegmental Reflex • Reciprocal innervation
- 13. A Spinal, Somatic,Monosynaptic, Ipsilateral, Segmental Reflex demonstrating Reciprocal Innervation
- 14. A Spinal, Somatic,Polysynaptic, Ipsilateral, Segmental Reflex demonstrating Reciprocal Innervation
- 15. A Spinal, Somatic,Polysynaptic, Ipsilateral, Intersegmental Reflex demonstrating Reciprocal Innervation
- 16. A Spinal, Somatic,Polysynaptic, Contralateral, intersegmental Reflex demonstrating Reciprocal Innervation