ch2neurons

ch2neurons - Neurons & Glia Ch. 2: The two cells of the...

Info iconThis preview shows pages 1–10. Sign up to view the full content.

View Full Document Right Arrow Icon
Neurons & Glia Ch. 2:
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
The two cells of the Nervous System: Neurons and Glial Cells
Background image of page 2
Parts of the Neuron (showing multipolar type)
Background image of page 3

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Types of Neurons Dorsal root ganglion Ventral root Unipolar neuron Bipolar neuron Multipolar neuron
Background image of page 4
Glial Cell Functions Supportive glial = glue Nutrition Waste disposal “vacuum cleaners” Insulate neurons New evidence that glia transmit signals Have receptors release neurotransmitter (glutamate) Release “trophic” (growth) factors onto neurons when signaled. important for memory formation
Background image of page 5

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Neurons vs Glial Cells Neurons Most mature cells do not replicate Dead cells are not replaced Glial cells Mature cells do replicate Dead cells are replaced
Background image of page 6
Some are phagocytic Primarily phagocytic
Background image of page 7

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Formation of Myelin by two types of glia: Oligodendrocytes and Schwann cells Schwann cells -on one axon -guide regrowth of axons -not affected by MS Oligodendrocytes -on multiple axons -do not promote regrowth (just sprouting of terminal buttons) -affected by MS
Background image of page 8
Multiple Sclerosis (MS) An auto-immune disease affecting oligodendrocytes. Genetic sensitivity to environmental triggers (found farther from the equator, before age 15).
Background image of page 9

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Image of page 10
This is the end of the preview. Sign up to access the rest of the document.

This note was uploaded on 04/17/2008 for the course PSYC 326 taught by Professor Chambers,lavond during the Spring '05 term at USC.

Page1 / 32

ch2neurons - Neurons & Glia Ch. 2: The two cells of the...

This preview shows document pages 1 - 10. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online