Micro Anatomy of the neurological system. Learn about glial cells, neurotransmitters, and the basics behind neuroanatomy upon which you can build as we go deeper into the neurological system.

1. Microscopic Anatomy and Physiology

2. • Neuroglia (glial cells)
– Support, nourishment, protectionto neurons
– Most common sitefor tumors in CNS
– Types
• Micorglia
• Oligodendroglia
• Astrocytes
• Ependyma

4. • Neuron
– Transmitimpulses
• 10 Billion in CNS
– Anatomy

5. • Afferentvs Efferent
– Afferent: sensory to spinalcord or brain
– Efferent: motor away from spinalcord of brain

6. • Neurotransmitters
– Act to facilitatetransmissionofimpulse
– Inactivatedby enzyme
– Types
• Excitatory
• Inhibitory

7. • Neurotransmitter Systems in Brain
– Noradrenaline(noradrenergic)
– Dopamine (dopaminergic)
– Histamine(histaminergic)
– Serotonin(serotonergic)
– Acetylcholine(cholinergic)

8. • Cerebral Metabolism
– O2
• 20% CO, 20% of O2 delivered
– Massive Energy Needs
• No Insulin requried!
• Hypoglycemia
– NeuroChange (50 – 70 mg/dL)
– Coma (20mg/dL)
• Hyperglycemia
– Osmotic effect– brain dehydration

9. • Blood-BrainBarrier
– Not an actualstructure

10. NRSNG.com
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