Cells of the Nervous System

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  • Created by: psychgem
  • Created on: 12-05-17 21:21
Central Nervous System
Brain & Spinal cord
1 of 60
Peripheral Nervous System
Autonomic & somatic
2 of 60
Efferent Cells
Somatic, motor
3 of 60
Afferent
Somatic, Sensory
4 of 60
Communicates with Skeletal muscles and Sense organs
Somatic
5 of 60
Parasympathetic & Sympathetic
Autonomic
6 of 60
Sympathetic
Lumbar & Thoracic
7 of 60
Parasympathetic
Cervical & Sacral
8 of 60
Parasympathetic Nervous System
Rest & Digest
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Sympathetic Nervous System
Dilates Pupils
10 of 60
Parasympathetic Nervous System
Stimulates Intestinal Motility
11 of 60
Sympathetic Nervous System
Fight or Flight
12 of 60
Cervical
8
13 of 60
Thoracic
12
14 of 60
Lumbar & Sacral
5
15 of 60
Sensory Nerves
Afferent
16 of 60
Motor Nerves
Efferent
17 of 60
Pairs of spinal nerves located at each vertebral level of spinal cord
31
18 of 60
Area of skin relating to particular spinal nerves
Dermatone
19 of 60
Damage to Cervical Vertebrae
Quadriplegia
20 of 60
Damage to Thoracic Vertebrae
Partial Paralysis
21 of 60
Damage to Lumbar Vertebrae
Below the chest
22 of 60
Damage to the Sacral Vertebrae
Below the Hips
23 of 60
Order of Meninges
(Skull) Dura Mater (Subdural Space), Arachnoid Membrane (Subarachnoid Space), Pia Mater
24 of 60
Component inside Dura Mater
Superior Sagittal Sinus
25 of 60
Most Dorsal Ventrical
Lateral Ventricle
26 of 60
Cerebral Aqueduct is between the...
Third and Fourth Ventricle
27 of 60
Cerebrospinal Fluid fills the...
Subarachnoid Space
28 of 60
Cerebrospinal is manufactured in the...
Choroid Plexus
29 of 60
Cerebrospinal Fluid is made from...
Blood
30 of 60
Weak area of blood barrier...
Postrema
31 of 60
Area Postrema is in the...
Medulla
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Choroid Plexus is in the...
Lateral Ventricle
33 of 60
An abnormal accumulation of cerebrospinal fluid....
Hydrocephalus
34 of 60
Soma is...
cell body of neuron, contains nucleus
35 of 60
Dendrite is...
tree-like structure which receives information from other neurons
36 of 60
Axon is...
long, thin structure which conveys information from the soma to its terminal buttons
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multipolar neuron...
One axon & many dendrites attached to soma
38 of 60
Bipolar neuron...
One axon & one dendrite attached to soma
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Unipolar neuron...
One axon attached to soma & axon divides with one branch
40 of 60
CNS
Cell bodies - Nuclei - Axon = Tracts
41 of 60
Astrocytes...
Largest Glial Cells - extensions cover surface of neurons - provides support for neurons - controls establishment and maintenance of synapses
42 of 60
Oligodendrocytes....
Glial Cells of CNS - extensions wrap around axons - rich in myelin - support axons and produce myelin sheaths
43 of 60
Swann Cells
Glial Cells of PNS - extensions wrap around axons - contributes a myelin sheath - can guide for axonal regeneration after damage
44 of 60
Difference in electrical charge between the inside and outside of cell
Membrane Potential
45 of 60
Resting Potential of Neuron...
-70mV
46 of 60
Resting Potential means...
A neuron is polarised with 70mV charge inside the cell, than outside the cell
47 of 60
Dendrite Spine
Small bud on surface of dendrite, terminal button of another neuron form a synapse
48 of 60
Presynaptic Membrane
Membrane of a terminal button that lies adjacent to the postsynaptic membrane
49 of 60
Postsynaptic Membrane
Membrane opposite the terminal button in a synapse, where neurotransmitter will be received
50 of 60
Excitatory Postsynaptic Potential
Depolarise PSN > -70mV - -67mV > increase likelihood that PSN will be firing
51 of 60
Inhibitory Postsynaptic Potential
Hyperpolarise PSN > -70mV - -72mV > decrease likelihood that PSN will be firing
52 of 60
Postsynaptic Potential...
the graded response of the postsynaptic neuron - decremental and instantanous
53 of 60
Threshold of Excitation...
value of membrane potential that must be reached to produce an action - +50-65mV
54 of 60
Action Potential...
Electrical impulse that provides the basis for conduction of information along an axon - from -70mV - +50mV
55 of 60
All or Nothing Law
once action potential begins, it proceeds without decrement to terminal buttons
56 of 60
Rate Law
variations in intensity of a stimulus or other information being transmitted in an axon are represented by variations in rate that an axon fires
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Cable Properties
Passive conduction of electrical current, in a decremental fashion, down an axon
58 of 60
Saltatory Conduction
conduction of action potentials by myelinated axons, action potentials jump from one node of ranvier to the next
59 of 60
Demyelination Disease
Damage to myelin sheath
60 of 60

Other cards in this set

Card 2

Front

Peripheral Nervous System

Back

Autonomic & somatic

Card 3

Front

Efferent Cells

Back

Preview of the front of card 3

Card 4

Front

Afferent

Back

Preview of the front of card 4

Card 5

Front

Communicates with Skeletal muscles and Sense organs

Back

Preview of the front of card 5
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