Neuro Study Guide

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THE HUMAN NERVOUS SYSTEM

OVERVIEW
1. The human nervous system
a. Central Nervous System (CNS)
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2. Brain Structures and their Function
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3. Cerebral lateralisation
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THE HUMAN NERVOUS SYSTEM

Central Nervous System
* Consists of the brain and spinal cord

Peripheral Nervous System
* Consists of somatic nervous system (SNS) and autonomic nervous system (ANS)

Somatic Nervous System
* Interacts with the environment
* Carries information from the muscles, skin, etc, to the CNS through afferent nerves * Carries motor signals from CNS via efferent nerves to muscles (Afferent – approach, Efferent – Exit)

Autonomic Nervous System
* Regulates body’s internal environment
* Consists of nerves connecting to the heart and blood vessels, glands, smooth muscles * Afferent nerves carry sensory info to CNS from internal organs * Efferent nerves carry information from CNS to the internal organs * ANS consists of sympathetic and parasympathetic systems (Sympathetic – marshals resources for crises, Parasympathetic – conserves resources)

THE HUMAN NERVOUS SYSTEM

CNS
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PNS
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SNS
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ANS
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