Physiology of Nervous System- dept of marine Medicine.pptx

great concise ppt for Basics of Physiology

1. ORGANISATION OF NERVOUS SYSTEM Surg Lt Cdr Kshitij Lanjekar Resident Marine Medicine

2. DIVISIONS

3. CENTRAL NERVOUS SYSTEM Brain and Spinal Cord Neurons and Supporting Cells- Neuroglia Two layers- Grey Matter and White Matter Grey matter- Nerve cell bodies and proximal part of nerve fibre White matter – Remaining part of Nerve fibre Meninges- Outer Dura, Middle Arachnoid , Inner Pia Subarachnoid space- Between Arachnoid and Pia- CSF

4. BRAIN

5. PERIPHERAL NERVOUS SYSTEM Formed by Neurons and their processes Cranial Nerves from Brain and Spinal Nerves from SC

6. NEURON Structural and functional unit of CNS Nerve cell Body and Nerve Fibres (Axon- long ,Dendrites- small)

7. ORGANISATION OF NERVE Nerve has bundles of nerve fibres Bundles are called Fasciculus. Nerve covering- Epineurium Fasciculus covering- Perineurium Nerve fibre/ Axon Covering- Endoneurium

8. MYELIN SHEATH Thick lipoprotein sheath – insulates Nerve fibre Non Continuous Node of Ranvier Internode Neurolemma

9. THANK YOU