(b) Motor neuron 260xLM
7654Neuroglia3
Copyright © 2014 John Wiley & Sons, Inc. All rights reserved.
6
75
(yellow)
4
39 8
Mitochondrion
Cytoplasm
Nucleus
Nucleolus10
Nucleus ofSchwann cell
Neurolemma ofSchwann cell
2
Synaptic end bulb1
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1
24
Dendrites
3
Cell body
56
Axon
8
7
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(a) Structural classification of neurons
1 2 3
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Sensoryreceptor
Sensoryneuron
Brain
Cerebral cortex
Interneuron
Upper motor neuron
Thalamus
Interneuron
Lower motor neuron
Spinal cord
Neuromuscular junction
Skeletal muscles
Right side of brain
Left side of brain
Key:Graded potentialNerve action potentialMuscle action potential1
2
3
4
5
6
7
8
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ANTERIOR
54White matter
3
2
1
Gray matter 7 Anterior rootlets
6
POSTERIOR
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Central nervous system (brain or spinal cord)
Stimulus
Response
1 2 3
4 5 6 7
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Oculomotor nerve (III)
Facial nerve (VII)
Vestibulocochlear nerve (VIII)
Glossopharyngeal nerve (IX)
Vagus nerve (X)
Trigeminal nerve (V) (mandibular branch)
Superior cervical sympathetic ganglion
Cervical sympathetic trunk
2
3
4
1
Copyright © 2014 John Wiley & Sons, Inc. All rights reserved.
12
34
56
ANTERIOR VIEW
POSTERIOR VIEW
L2L3L4
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(b) Sagittal section, magnified
6
95
7
8
Optic chiasm1011
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Skin
6
789
10
5
1
2
3
4
Frontal plane
(b) Frontal section through skull.
Copyright © 2014 John Wiley & Sons, Inc. All rights reserved.
Inferior aspect of brain
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1011
12
CRANIAL NERVES:
Copyright © 2014 John Wiley & Sons, Inc. All rights reserved.
Inferior aspect of brain
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1011
12
CRANIAL NERVES:
Copyright © 2014 John Wiley & Sons, Inc. All rights reserved.
Inferior aspect of brain
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1011
12
CRANIAL NERVES:
Copyright © 2014 John Wiley & Sons, Inc. All rights reserved.
(a) Microscopic structure of retina
1
2
3
4
6
5
Copyright © 2014 John Wiley & Sons, Inc. All rights reserved.