1 / 16

Understanding the Nervous System: Neurons, Signals, and Synapses

Dive into the vocabulary terms and key concepts of the nervous system, focusing on neurons, signal transmission, and synaptic connections. Explore the structures and functions involved in transmitting electrical and chemical signals between neurons.

jamesbterry
Download Presentation

Understanding the Nervous System: Neurons, Signals, and Synapses

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. Ch. 29.2 page 876 • 1st Define the vocabulary terms for this section. • 2nd Notes • 3rd-Activity

  2. Subject- Test The Nervous System • Date-May 2, 2012 • I am going to help with the diagram

  3. KEY CONCEPT The nervous system is composed of highly specialized cells.

  4. 1 Cell body Neurons are highly specialized cells. • A neuron has six parts. • cell body has nucleus and organelles

  5. 2 dendrites Neurons are highly specialized cells. • A neuron has six parts. • cell body has nucleus and organelles • dendrites receive impulses

  6. 3 axon Neurons are highly specialized cells. • A neuron has three parts. • cell body has nucleus and organelles • dendrites receive impulses • axon carries impulses

  7. Neurons have other structures to transmit signals. • Schwann cell

  8. synapse • Neurons have other structures to transmit signals. • Schwann cell-makes up the myelin sheath-insulates axons

  9. axon terminal • Neurons have other structures to transmit signals. • Synapse-gap between terminal end and next neuron • terminal-releases vesicles that contain neurotransmitters

  10. Neurons receive and transmit signals. • Resting potential means no signal is being transmitted. • more Na+ outside of cell • more K+ inside of cell

  11. area of detail • An action potential is a moving electrical impulse. • It is generated by a stimulus. • Na+ enters, and cell becomes positively charged. • K+ leaves, and area of positive charge moves.

  12. A chemical signal passes between neurons. • Impulse reaches terminal. impulse

  13. A chemical signal passes between neurons. • Impulse reaches terminal. impulse

  14. synapse receptor neurotransmitter vesicles • Neurotransmitters- Chemical signals that pass between neurons. • Impulse reaches terminal. • Neurotransmitters released into synapse. • --Bind to receptors on the next neuron and stimulate the next action potential, impulse

  15. synapse receptor neurotransmitter vesicles • A chemical signal passes between neurons. • Impulse reaches terminal. • Neurotransmitters released into synapse. impulse

More Related