Notes on Cerebral Motor Axis

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General Facets of the Motor Axis : Descending Stimuli

1. Stimuli originate in the motory cortex and descend by two routes:

a. Directly to relay stations in the spinal cord. Relay then by alpha motor fibres to motor-end plates in skeletal muscle thus controlling contraction.

b. From the motory cortex to the basal ganglia (caudate nucleus, putamen, globus pallidum and subthalamic nuclei). (A complex feed back relay system exists between the putamen, thalamic nuclei and motory cortex). From the basal ganglia further relay occurs in the bulboreticular formation (in the medulla) and at various spinal cord levels. From the spinal cord stimuli pass via gamma motor fibres to skeletal muscles.

Chapters on Cerebrum:

1. Anatomy of Cerebral Hemispheres
2. Functions of the Brain and Homunculus
3. Notes on Brodmann Areas
4. Cerebral Association and Commissural Fibres
5. Notes on CNS Functional Integration
6. Functions of Cerebral Lobes
7. Anatomy of the Inferior Cerebrum
8. Notes on Internal Capsule
9. Introduction to Cerebrum
10. Laminar Structure of Neocortex
11. Medial Cerebral Hemisphere
12. Notes on Cerebral Motor Axis
13. Notes on Somatic Sensory Axis
14. Specific Cerebral Cortical Functions
15. Surface of Cerebral Hemispheres

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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