Summary of Spinal Nerves

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Summary of Spinal Nerves:

Composition:

Fusion of a dorsal root (sensory fibres) and ventral root (motory fibres). A series of rootlets join to form each root. Each dorsal root bears a swelling called the spinal or dorsal root ganglion.

Initially, these rootlets are covered by meninges and dural extensions. The cervical nerves exit the vertebral canal via the intervertebral foramen above the corresponding vertebra. The thoracic and lumbar nerves leave the intervertebral foramen below the corresponding vertebra. The roots of nerves L1 - S5 run caudally and form a leash around the filum terminale termed the cauda equina.

A typical spinal nerve contain 4 components ie innervation of skeletal muscle (motor), sensory to muscle, skin and joints, autonomic motor innervation and sensory to visceral structures (see later).

Chapters on Spinal Cord:

1. Anatomy of the Spinal Cord
2. Ascending Spinal Tracts
3. Blood Supply of Spinal Cord
4. Notes on Corticospinal Tracts
5. Cross Section of Spinal Cord
6. Descending Spinal Tracts
7. Grey Matter of Spinal Cord
8. Summary of Spinal Nerves

Additional Reading:

Basic Neurology

1. Peripheral Nervous System
2. Central Nervous System
3. The Ventricular System
4. The Spinal Cord
5. The Brain Stem
6. The Cerebellum
7. Visual Pathways
8. Diencephalon
9. Basal Ganglia
10. Cerebral Cortex
11. Sleep Disorders
12. Autonomic Nervous System
13. Cranial Nerves and Parasympathetic Ganglia
14. Cells of the Nervous System
15. Cerebrospinal fluid
16. Additional short notes on Cerebrum
17. Functions and Diseases of Cerebrum
18. Subcortical Grey Matter
19. Notes on The Spinal Cord
20. Regulation of Heart Rate by Autonomic Nervous System
21. Action Potentials, Axon Conduction, and Neuromuscular Junction
22. Types of Seizures
23. What is a Cough Reflex?
24. Notes on Congenital Prosopagnosia
25. Findings in Parkinson's Disease
26. Types of Heat Strokes
27. Types of Strokes
28. What is Benign Intracranial Hypertension?
29. What is Cauda Equina Syndrome?
30. Cranial Nerve Locations in Brain Stem
31. What is a Cluster Headache?
32. What is a Subarachnoid Hemorrhage?
33. What is a Tension Headache?

Neurology Videos

1. Video of Neurology Examination in a Clinical Setting

Medical Images

Useful Medical Images & Diagrams (link opens in a new window)

Related Topics

1. Nervous System Disorders
2. Histology of Nervous Tissue
3. Cranial Nerve Reflexes
4. Motor System Examination

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