no pains no gains 1 nerve reflex of panda---surprise
Post on 11-Jan-2016
220 Views
Preview:
TRANSCRIPT
NO PAINS NO GAINS 1Nerve reflex of panda---surprise
NO PAINS NO GAINS 2
Your nerve reflex---laugh
NO PAINS NO GAINS 4
Objective: Grasp Neuronal structures under LM
Grasp Myelinated peripheral nerve
Understand:
tactile corpuscles
lamellated corpuscles
Grasp Nissl body
Synapse
NO PAINS NO GAINS 5
REVIEW( 复习 )
NO PAINS NO GAINS 6
perikaryon胞体
Process突起
Axon轴突
Dendrite树突
nervous tissue
Neuron神经元
Neuroglia神经胶质细胞
NO PAINS NO GAINS 7
尼氏体 (Nissl body) ：1 LM: Basophilic particles,
2 compositoin ： RER + free ribosome
3 function ： active Pr synthesis : enzyme
NO PAINS NO GAINS 8
1 definition ： Specialized for the release and reception of neurotransmitters.2 compositon ： under EM ：a. Presynaptic element ： synaptic vesicles with
（ Presynaptic membrane ） neurotransmitters b. Synaptic cleft ： c. Postsynaptic element ： receptors 。 （ Postsynaptic membrane ）3 function ： transmitting impulses in one direction
化学性突触 ★
NO PAINS NO GAINS 9
slides
1 Multipolar motor Neuron
(spinal cord), H&E.
2 Myelinated peripheral nerve fiber
sciatic nerve (HE)
3 Tactile corpuscle and lamellated corpuscle
skin (HE)
4 Spinal ganglion
HE
NO PAINS NO GAINS 10
What we should find
1 Spinal cord
Multipolar neurons
( Perikaryon, nucleus, Nissl body)
2 sciatic nerve
axon, myelin sheath, node of Ranvier
neurolemma and so on
3 Skin:tactile corpuscle
lamellated corpuscle
4 spinal ganglion
Perikaryon, satellite cells
NO PAINS NO GAINS 11
How to find
NO PAINS NO GAINS 12
Cross section ： flaten round
灰质（ gray matter ） : central ， butterfly
白质（ white matter ） : peripheral
slide 1 脊髓（ spinal cord)
NO PAINS NO GAINS 13
Slide 2 Myelinated peripheral nerve
周围神经系统有髓神经纤维
cross section
longitudinal section
NO PAINS NO GAINS 15
中央管（ Central Canal ）（ ependimal cells ）： simple cuboidal
or columnar
NO PAINS NO GAINS 16
白质（ White Matter ） different sections
nuclei of neuroglia
NO PAINS NO GAINS 17
The dorsal horn (DH) 背角（后角）
The ventral horn (VH) 腹侧角（前角）
The central canal (CC) 中央管
灰质（ Gray Matter ）
NO PAINS NO GAINS 18
neuron ： perikaryon ： huge ， irregular cytoplasm ： Nissl bodies nucleus ： huge ， round ， pale staining ， clear nuclear membrane and nucleolus
The ventral horn (VH) 腹侧角（前角）
NO PAINS NO GAINS 19
nucleus
Soma 胞体
Dendrite树突
axon hillock轴丘
Nissl bodies
nucleolus
NO PAINS NO GAINS 20
Gray Mattermultipolar neuron
NO PAINS NO GAINS 21
NO PAINS NO GAINS 22
Slide 2 Myelinated peripheral nerve, H&E.
周围神经系统有髓神经纤维
cross section
longitudinal section
NO PAINS NO GAINS 23
1) Cross section （ lower power ）
perineuriumepineurium
NO PAINS NO GAINS 24
1) Cross section （ high power ）
Axon
Myelin sheath
Endoneurium
NO PAINS NO GAINS 25
2) Longitudinal section（ lower power ）
myelin sheath
fibroblast nuclei
The Nodes of Ranvier
Schwann Cells
axon
NO PAINS NO GAINS 26
郎飞结（ Node of Ranvier ）
NO PAINS NO GAINS 27
Slide 3 :Skin of the finger H&E
epidermis
dermis
hypodermis
NO PAINS NO GAINS 28
NO PAINS NO GAINS 29
(1) Tactile corpuscles
1.Where?In the dermal papillae
2.Shape? Oval Perpendicular to the surface
3.Component? Stacked flat cells Capsule Never ending
NO PAINS NO GAINS 30
NO PAINS NO GAINS 31
(2) Lamellated corpuscles
Where?hypodermis
Shape? Large / Oval Sliced onions
Component? Concentric layer of CT
Central core Never ending
NO PAINS NO GAINS 32
NO PAINS NO GAINS 33
3) nerve bundles
NO PAINS NO GAINS 34
Slide 4 Spinal ganglion H&E,
4. Low power:ganglion cells
NO PAINS NO GAINS 35
Spinal ganglion H&E High power:
satellite cells
ganglion cells
NO PAINS NO GAINS 36
Slide 4 Motor end plate(AgNO3)
NO PAINS NO GAINS 37
Motor end plate
NO PAINS NO GAINS 38
T e s t
NO PAINS NO GAINS 39
Which structure (pointer)?
NO PAINS NO GAINS 40
Which tissue ?
Which structure (pointer)?
NO PAINS NO GAINS 41
Which structure (pointer)?
NO PAINS NO GAINS 42
Which structure (pointer)?
NO PAINS NO GAINS 43
Which structure (pointer)?
NO PAINS NO GAINS 44
Which structure (pointer)?
NO PAINS NO GAINS 45
Which structure (pointer)?
NO PAINS NO GAINS 46
Which structure (pointer)?
NO PAINS NO GAINS 47
Which structure (pointer)?
top related