Table of Contents

Lessons 1. Nervous System Go Go 2. Diseases and Disorders Go Go

Table of Contents  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.

Table of Contents  Neuron, or nerve cell.  Dendrites  Axons  Myelin sheath.  Synapse

Table of Contents  Afferent  Efferent  Associative

Table of Contents  Central nervous system  Peripheral nervous system ◦ autonomic nervous system

Table of Contents  Cerebrum  Diencephalon ▫Thalamus ▫Hypothalamus  Cerebellum

Table of Contents  Brain stem ▫Midbrain ▫Pons ▫Medulla oblongata

Table of Contents  Controls many reflex actions  Pathway for messages to and from the brain and the nerves that go to the muscles and glands.

Table of Contents  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

Table of Contents  Cranial nerves ◦ 12 pairs and branches  Spinal nerves ◦ 31 pairs and branches

Table of Contents  Autonomic nervous system controls the involuntary, or automatic, activities of the body  Sympathetic system  Parasympathetic system

Table of Contents  Myasthenia Gravis  Cerebrovascular Accidents  Multiple Sclerosis