1 / 22

Elements of Neurology

Elements of Neurology. Elements of neurology. Organs of the nervous system are basically formed of the neurons .

tod
Download Presentation

Elements of Neurology

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Elements of Neurology Lufukuja G.

  2. Elements of neurology • Organs of the nervous system are basically formed of the neurons. • Other associated or supporting cells of the nervous system are known as neuroglia or glial cells. These include microglia, schwann cells, oligodendrocytes and ependymal cells. • Neurons and glial cells have their intercellular substance known as neuropile more pronounced in the brain and spinal cord Lufukuja G.

  3. Elements of neurology… Lufukuja G.

  4. Lufukuja G.

  5. Neurons: • This is a nerve cell (basic unit of NS) and all of its processes. A neuron has two parts; cell body (soma) and processes. Cell body contains a nucleus and all necessary organelles for metabolic activity. Processes are for impulse conduction; an axon (long and only one per cell) conducts the impulses away from the cell body while the dendrites (short and one or more per cell) conduct towards.

  6. Neuron cont….. • Neurons are classified according to the number of processesinto: • Pseudounipolar or unipolar • Bipolar • Multipolar • According to function as: • Sensory • Motor • Association, intermmediate or internuncial • According to length of an axon into: • Golgi type I – relatively short axons • Golgi type II – relatively long axons • According to myelination of an axon into: • Myelinated neuron • Non-myelinated neuron

  7. Lufukuja G.

  8. Nervous system • The nervous system is formed of the following organs: • Brain • Spinal cord • Nerves • Ganglia (sing. Ganglion) Lufukuja G.

  9. Nervous system… Lufukuja G.

  10. Nervous system… Lufukuja G.

  11. Nervous system… Lufukuja G.

  12. Lufukuja G.

  13. Nervous system… • The ANS has two divisions named as craniosacral (parasympathetic) outflow and thoracolumbar (sympathetic) outflow. Lufukuja G.

  14. Lufukuja G.

  15. Parasympathetic Lufukuja G.

  16. Lufukuja G.

  17. Lufukuja G.

  18. Lufukuja G.

  19. Lufukuja G.

  20. Dermatome • The unilateral area of skin innervated by the fibers of a single spinal nerve is called a dermatome; the unilateral muscle mass receiving innervation from the fibers conveyed by a single spinal nerve is a myotome Lufukuja G.

  21. Applied anatomy Referred pain • Referred pain, also called reflective pain, is pain perceived at a location other than the site of the painful stimulus. An example is the case of ischemia brought on by a myocardial infarction (heart attack), where pain is often felt in the neck, shoulders, and back rather than in the chest, the site of the injury. Lufukuja G.

  22. Lufukuja G.

More Related