1. 7
The Nervous System
PPT-A
33 slides
2 hour

2. PPT-A OUTLINE PPT-B OUTLINE
I. Overall Functions II. NS Organization III. Nervous Tissue IV. Physiology
A. Sensory A. Structural A. Cells A. N. Properties
B. Integration B. Functional B. Terminology B. Action Potentials
C. Motor C. Functional Classification N.
D. Structural Classification N.
V. Central Nervous System VI Peripheral Nervous System
A. Brain A. Nerves
B. Spinal Cord B. Autonomic NS
PPT-B OUTLINE

3. I. Overall Functions of the Nervous System
A. Sensory input =
B. Integration =
C. Motor output =

4. II. Organization of the Nervous System A. Structural Classification
1. *Central nervous system (CNS) =
a. *Parts
b. *Function
2. Peripheral nervous system (PNS) =
a. Parts
Ganglia
Nerves:
Functions:

5. B. Functional Classification of the Peripheral N.S.
1. Sensory (afferent):
2. Motor (efferent):

6. III. Nervous Tissue Structure & Function: A. Nervous Tissue Cells
1. Neuroglia (glial): Support cells
a. *General functions
*Support
*Insulate
*Protect

7. Nervous Tissue Structure and Function … 2. Neurons
a. Function:
b. Parts–
i) *Cell body
Nissl bodies = rough ER
*Nucleus
ii) *Processes GO TO SLIDE 10

8. Dendrite
Cell
body
Mitochondrion
Nissl substance
Axon
hillock
Axon
Neurofibrils
Collateral
branch
Nucleus
One
Schwann cell
Node of
Ranvier
Axon
terminal
Schwann cells,
forming the myelin
sheath on axon
(a)
Figure 7.4a

9. Neuron cell body
Dendrite
(b)
Figure 7.4b

10. Nervous Tissue: Neurons …
ii) *Processes =
(1) *Dendrites:
(2) *Axons:
Axon Hillock
*Axon Terminal
*Contain Synaptic Vesicles
*Neurotransmitters

11. c. Synaptic cleft = Synapse—gap between adjacent neurons

12. Nervous Tissue: Neurons …
d. Myelin sheath =
Cell that forms
ii) How forms it
iii) Nodes of Ranvier
iv) CNS and PNS
differences

13. Schwann cell
cytoplasm
Schwann cell
plasma membrane
Axon
Schwann cell
nucleus
(a)
(b)
Neurilemma
Myelin
sheath
(c)
Figure 7.5