Table of Contents Nervous System
Dec 31, 2015
Table of Contents
Nervous System
Table of Contents
Lessons1. Nervous System Go
2. Diseases and Disorders Go
Nervous SystemT
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Lesson 1– Nervous System
The nervous system is the communication network for the body.
The main function of the nervous system is to coordinate all of the body’s activities.
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Lesson 1– Neurons
Neuron, or nerve cell.
Dendrites Axons Myelin sheath.
Synapse
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Lesson 1– Types of Neurons
Afferent
Efferent
Associative
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Lesson 1– Divisions of the Nervous System
Central nervous system
Peripheral nervous system◦ autonomic nervous
system
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Lesson 1– Central Nervous System: Brain
Cerebrum Diencephalon
▫ Thalamus▫ Hypothalamus
Cerebellum
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Lesson 1– Central Nervous System: Brain (Continued)
Brain stem ▫ Midbrain▫ Pons ▫ Medulla oblongata
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Lesson 1– Central Nervous System: Spinal Cord
Controls many reflex actions
Pathway for messages to and from the brain and the nerves that go to the muscles and glands.
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Lesson 1– Central Nervous System: Protection
Brain is protected by the skull
Spinal cord is protected by the vertebrae
Meninges cover and protect the brain and spinal cord:▫ Dura mater▫ Arachnoid▫ Pia mater
Cerebrospinal fluid
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Lesson 1– Peripheral Nervous System
Cranial nerves ◦ 12 pairs and branches
Spinal nerves◦ 31 pairs and branches
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Lesson 1– Autonomic Nervous System
Autonomic nervous system controls the involuntary, or automatic, activities of the body
Sympathetic system
Parasympathetic system
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Lesson 2– Diseases and Disorders of the Nervous System
Myasthenia Gravis
Cerebrovascular Accidents
Multiple Sclerosis