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THE NERVOUS SYSTEM An Introduction. Basic Functions  Sensory Input  Integration  Motor Output.

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Presentation on theme: "THE NERVOUS SYSTEM An Introduction. Basic Functions  Sensory Input  Integration  Motor Output."— Presentation transcript:

1 THE NERVOUS SYSTEM An Introduction

2 Basic Functions  Sensory Input  Integration  Motor Output

3 Nervous vs. Endocrine Fast Control Neurons Neurotransmitters Short-Term Effects “Slow” Control Blood Stream Hormones Lasting Effects Monitor Stimuli React Homeostasis

4 Nervous System Central Nervous System Peripheral Nervous System Somatic Autonomic Sympathetic Parasympathetic Sensory (afferent) Motor (efferent)

5 Organization of the Nervous System 1. Central Nervous System (CNS)  Brain, Spinal Cord  Integration Center 2. Peripheral Nervous System (PNS)  Nerves  Sensation, Reaction

6  Sensory (Afferent)  Sense Receptors  CNS  Monitors interior & exterior  Motor (Efferent)  CNS  Effectors (Muscles/Glands) Organization of the PNS

7 Organization of the Efferent Division 1. Somatic  Voluntary  CNS  Skeletal Muscles 2. Autonomic  Involuntary  CNS  Glands, cardiac, smooth muscle

8 Autonomic Organization  Sympathetic  “Fight or Flight”  Parasympathetic  “Rest or Digest”

9 Nervous System Central Nervous System Peripheral Nervous System Somatic Autonomic Sympathetic Parasympathetic Sensory (afferent) Motor (efferent)


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