Lecture 28

Lecture 28 - Introduction to the Nervous System Nervous...

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Introduction to the Nervous System
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Nervous System Functions: 1) Sensory function (afferent neurons) Information goes to the brain and spinal cord via cranial and spinal nerves 2) Integrative function (interneurons) Integrates sensory information by analyzing and storing it 3) Motor function (efferent neurons) Information from the brain and spinal cord is sent out to muscles or glands (effectors)
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Overview of the nervous system Nervous System Central Nervous System (Brain and Spinal Cord) Peripheral Nervous System (Cranial and Spinal Nerves) Somatic Nervous System (Skeletal muscles) Autonomic Nervous System (Smooth Muscle, Cardiac Muscle, Glands) Sympathetic Division Parasympathetic Division Enteric Nervous System (Smooth Muscle, Glands of GI tract)
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Overview of Nervous System
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Brain • Center of intelligence, memory and emotion • Coordinates activity of skeletal muscles • Influences activity of visceral organs and glands
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Brain What is it composed of? – 100 billion neurons and even more neuroglia
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Lecture 28 - Introduction to the Nervous System Nervous...

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