Báo cáo anh văn chuyên ngành Y khoa: Nervous System
Bạn đang xem bản rút gọn của tài liệu. Xem và tải ngay bản đầy đủ của tài liệu tại đây (3.56 MB, 71 trang )
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 systemNEURON
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
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
