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BRAIN
Chapter 3 Vocab Words
16
Physiology
Undergraduate 2
01/17/2011

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Term
Central Nervous System
Definition
is the division of the nervous system that is located within the skyll and spine
Term

Peripheral Nervous

System

Definition
is the division that is lovated outside the skull and spine
Term
Somatic Nervous System
Definition
is the part of the PNS that interacts with the external enviornment
Term
Autonomic Nervous System
Definition
is the part of the PNStaht regulates the body's internal environment
Term
Afferent Nerves
Definition
carry signals from the skin, skeletal muscles, joints, eyes, ears, and so on, to the central nervous system
Term
Efferent Nerves
Definition
carry motor signals from the central Nervous system to the skeletal muscles.
Term
Sympathetic Nerves
Definition
are those autonomic motor nerves that project from the CNS in the Lumbar and Thoracic regions of the spinal cord
Term
Parasympathetic
Definition
are those autonomic motor nerves that project from the brain and sacral region of the spinal cord
Term
Cranial
Definition
Top 1/4 of the body
Term
Thoracic
Definition
Chest area, 2nd portion, 1/4 of the body
Term
Lumbar
Definition
Small of the back area, 3rd portion, 1/4 of the body
Term
Sacral
Definition
Lower back, lowest 1/4 of the body
Term
Second stage neurons
Definition
Term
Parasympathetic Nerves
Definition
Term
Sympathetic Nerves
Definition
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