nervous system -nsu
Post on 30-May-2018
223 Views
Preview:
TRANSCRIPT
-
8/14/2019 Nervous System -NSU
1/42
Histology 5b
Craig Clifford
Northeastern State University
Spring 2009
-
8/14/2019 Nervous System -NSU
2/42
Nerve Tissue and the Nervous
System
100 million nerve cells or neurons
Each with an average 1000
connections with other neurons
Organized in circuits and groups of
circuits that carry out higher order
neural function
-
8/14/2019 Nervous System -NSU
3/42
Nervous System
Central nervous system Brain
Spinal cord
Peripheral nervous system Nerve cells
Ganglia
-
8/14/2019 Nervous System -NSU
4/42
-
8/14/2019 Nervous System -NSU
5/42
There are two types of cells that makeup the nervous system.
Nerve cells or neurons Usually with numerous long processes
Glial cells (Gr. glia, glue Short processes
Support and protect neurons Neural nutrition Neural tissue defense
-
8/14/2019 Nervous System -NSU
6/42
Neural development
-
8/14/2019 Nervous System -NSU
7/42
-
8/14/2019 Nervous System -NSU
8/42
-
8/14/2019 Nervous System -NSU
9/42
-
8/14/2019 Nervous System -NSU
10/42
-
8/14/2019 Nervous System -NSU
11/42
Grey vs. white matter
WhiteGrey
-
8/14/2019 Nervous System -NSU
12/42
Cell body
Trophic center of the cell exclusive of
the dendrites and axon
Nissl bodies = ribosomes and ER
Golgi complex
-
8/14/2019 Nervous System -NSU
13/42
-
8/14/2019 Nervous System -NSU
14/42
Franz Nissl 1860 1919
Germanneuropathologist
pathology ofcortical neurons histological stain
for selective
visualization ofneuronalcell bodies
Source Wikipedia
http://en.wikipedia.org/wiki/1860http://en.wikipedia.org/wiki/1919http://en.wikipedia.org/wiki/Cerebral_cortexhttp://en.wikipedia.org/wiki/Neuronhttp://en.wikipedia.org/wiki/Soma_%28biology%29http://en.wikipedia.org/wiki/Soma_%28biology%29http://en.wikipedia.org/wiki/Neuronhttp://en.wikipedia.org/wiki/Cerebral_cortexhttp://en.wikipedia.org/wiki/1919http://en.wikipedia.org/wiki/1860 -
8/14/2019 Nervous System -NSU
15/42
Franz Nissl
important work in psychiatry
correlating changes in glial cells, blood
vessels, and brain tissue with mentalillness
worked with and was friends with Alois
Alzheimer
http://en.wikipedia.org/wiki/Gliahttp://en.wikipedia.org/wiki/Alois_Alzheimerhttp://en.wikipedia.org/wiki/Alois_Alzheimerhttp://en.wikipedia.org/wiki/Alois_Alzheimerhttp://en.wikipedia.org/wiki/Alois_Alzheimerhttp://en.wikipedia.org/wiki/Glia -
8/14/2019 Nervous System -NSU
16/42
Dark inclusions are
Nissl bodies.
Large process is a
dendrite.
-
8/14/2019 Nervous System -NSU
17/42
-
8/14/2019 Nervous System -NSU
18/42
Membrane potentials
Nervous and muscle tissue is
considered irritable or excitable tissue
This means that these tissues canrespond to a stimulus or change in the
environment
-
8/14/2019 Nervous System -NSU
19/42
Resting and Action potentials
Normally the membrane is at rest and
when stimulated it responds
http://www.blackwellpublishing.com/matthew
http://www.blackwellpublishing.com/matthews/channel.htmlhttp://www.blackwellpublishing.com/matthews/channel.htmlhttp://www.blackwellpublishing.com/matthews/channel.htmlhttp://www.blackwellpublishing.com/matthews/channel.html -
8/14/2019 Nervous System -NSU
20/42
-
8/14/2019 Nervous System -NSU
21/42
Glial cells
Oligodendrocytes Located in the CNS
Produce the myelin sheath
-
8/14/2019 Nervous System -NSU
22/42
-
8/14/2019 Nervous System -NSU
23/42
Glial cells
Schwann cells
Named after
Theodor Schwann,German cytologist
and physiologist
(1810-1882)
Father of modern
histology
-
8/14/2019 Nervous System -NSU
24/42
Theodor Schwann
Discovered the enzyme pepsin
Coined term metabolism
Described skeletal muscle in the upper
esophagus
Discovered myelin sheath on neurons
Along with Mathias Schleiden
developed cell theory in 1839
-
8/14/2019 Nervous System -NSU
25/42
-
8/14/2019 Nervous System -NSU
26/42
-
8/14/2019 Nervous System -NSU
27/42
-
8/14/2019 Nervous System -NSU
28/42
-
8/14/2019 Nervous System -NSU
29/42
Gray Matter
Spinal cord grey matter
-
8/14/2019 Nervous System -NSU
30/42
-
8/14/2019 Nervous System -NSU
31/42
-
8/14/2019 Nervous System -NSU
32/42
Pia Mater
-
8/14/2019 Nervous System -NSU
33/42
Choroid plexus
-
8/14/2019 Nervous System -NSU
34/42
Choroid plexus
-
8/14/2019 Nervous System -NSU
35/42
Choroid plexus
-
8/14/2019 Nervous System -NSU
36/42
Choroid plexus from book
-
8/14/2019 Nervous System -NSU
37/42
-
8/14/2019 Nervous System -NSU
38/42
Cross section of nerve
Epineurium Dense CT and
fibroblasts
Perineurium Flattenned, tight-
junction
epitheliumlike cells Endoneurium
Thin reticular CT
-
8/14/2019 Nervous System -NSU
39/42
-
8/14/2019 Nervous System -NSU
40/42
Cross section of two small nerves.
Schwann cell
nucleus
Axons
-
8/14/2019 Nervous System -NSU
41/42
-
8/14/2019 Nervous System -NSU
42/42
top related