Báo cáo anh văn chuyên ngành Y khoa: Nervous System

Brain Teaser
1, 4, 7, 10, 13, 16, 19,
Which number comes next in the sequence?
21,22,23 or 24 ?
Why can we do these activities ?
NERVOUS SYSTEM
PRESENTED BY GROUP 8, YGH – K38
CAN THO UNIVERSITY OF MEDICINE – PHARMACY
INTRODUCTION
What is nervous system?
Introduction
Control
Learning
Memory
Movement
Feeling
Nervous systemCentral Nervous System (CNS)BrainSpinal cordPeripheral Nervous System (PNS)Cranial nervesSpinal nervesAutonomic nervous system
Division of nervous system
NEURON
Has 3 main parts
Cell body
Dendrites
Axon
Dendrites
Axon of
another neuron
Receive messages and conduct impulses
to the cell body
Cell body or soma
•

Contain the cell nucleus
Cell nucleus
Cell’s life support center
Axon
•
Carry the impulses away from cell body
To another neuron
Axon
Terminal
end fibers
Axon
Can be covered with myelin
Myelin
•
Two kinds of axon:
Axon
Unmyelinated axon
Myelinated axon
White matter
Gray matter
Axon
•
Transmission in myelinated axon is faster
Nodes of
Ranvier
Jump down
nervous impulse jumps
Synapse
One
neuron

Another
neuron
Synapse
Neurotransmitter
•
Chemical substances help impulses across
the synapse.
Neurotransmitter
NERVE
Structure
•
A nerve consists of a bundle of dendrites and
axons that travel together like strands of rope
Classification of nerve
- Sensory nerve (Afferent nerve)
- Motor nerve (Efferent nerve)
BRAIN
Brain
a
b
o
u
t

1
,
4

k

i
l
o
s
Structure of the brain
Cerebrum
Cerebellum
Diencephalon
(interbrain)
Brainstem
Cerebrum
deep longitudinal
fissure ( groove)
Cerebrum
Gyri
Sulci
cerebral
cortex