1 / 23

Nissil Bodies

Nissil Bodies. Axon Hillock . Motor Neuron. Schwann Cell. Functional Classification 1. Sensory (afferent) 2. Motor (efferent) 3. Interneurons • Conducts action potentials from periphery to CNS • Transmits action potentials from CNS to periphery • Impulses to effectors

zanta
Download Presentation

Nissil Bodies

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. Nissil Bodies

  2. Axon Hillock

  3. Motor Neuron

  4. Schwann Cell

  5. Functional Classification 1. Sensory (afferent) 2. Motor (efferent) 3. Interneurons • Conducts action potentials from periphery to CNS • Transmits action potentials from CNS to periphery • Impulses to effectors • Completely within CNS • Transmits action potentials from one part of CNS to another part of CNS

  6. Neuroglia

  7. Neuroglia CNS Oligodendrocyte- Forms Myelin Astrocyte- Promote blood brain barrier, nourish neuron, strengthen. "mommy" Ependymal- Produce cerebrospinal fluid, form blood brain barrier Microglia- Phagocytize bacteria

  8. Neuroglia PNS Schwann Cell- Myelin Satellite Cell- nourish and support (The mommy for the PNS)

  9. Disorders of the Neuroglia Amyotrophic Lateral Sclerosis/ Lou Gehrig's- Astrocyte's secrete toxins that destroy neurons Hungtington's- Microglia secretes toxins destroying neurons

  10. Membrane Potential

  11. Membrane Potential

  12. Membrane Potential

  13. Measuring the Action Potential

  14. http://highered.mcgraw-hill.com/sites/0073525707/student_view0/chapter10/voltage-gated_channels_and_the_action_potential.htmlhttp://highered.mcgraw-hill.com/sites/0073525707/student_view0/chapter10/voltage-gated_channels_and_the_action_potential.html

  15. Neurotransmitters +30 or more types Acetylcholine – stimulates skeletal muscle contractions Monoamines Norepinephrine Dopamine Norepinephrine & Dopamine generate a sense of well-being in CNS Amphetamines increases levels of dopamine & Norepinephrine Amino Acids GABA General Inhibitory neurotransmitter in CNS Opens Cl- channels, Cl- influx hyperpolarizes cell Some Anesthesia enhance GABA secretions Schizophrenia – associated with GABA deficiency Gas Nitric Oxide (NO) Vasodilator Released during sexual arousal Viagra prolongs the presence of NO

More Related