Lecture 3--Nervous System 6 slides

Lecture 3--Nervous System 6 slides - 10/3/10 1 B IOLOGICAL...

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Unformatted text preview: 10/3/10 1 B IOLOGICAL P SYCHOLOGY PSC 001 Section 003 Fall 2010 Outline This time: The Nervous System Older Brain Structures The Cerebral Cortex Current Techniques for Studying the Brain Next time: Neurons and Neurotransmitters Nature and Nurture Psychology and the Brain Brain provides connection between behavior and the mind BRAIN BEHAVIOR MIND Today: The Era of the Brain An explosion of brain science But do we know as much as we think? The problem of causation What is outside matters too! The Nervous System Divisions of the Nervous System Central Nervous System Brain Spinal Cord Encased in bone Organization/decision making Peripheral Nervous System All other nerve cells in body Sensory nerves to brain Motor nerves from brain Input/Output 10/3/10 2 Divisions of the Nervous System Peripheral Nervous System Somatic Voluntary (conscious) Touch messages to brain Motor messages to skeletal muscles Autonomic Automatic (normally unconscious) Messages to/from internal organs and glands Divisions of the Nervous System Somatic nervous system Transmits sensory signals to the spinal cord + brain (CNS) via nerves Sensory (afferent) nerve fibers Transmits signals from CNS to muscles, joints and skin Motor (efferent) nerve fibers Controls voluntary movement Divisions of the Nervous System Autonomic nervous system Controls involuntary actions of internal organs, glands and smooth muscles Messages run between CNS and ANS Participates in the experiences of emotion Responsible for the involuntary functions we don’t normally think about e.g. heart rate, digestion and perspiration 10/3/10 3 Autonomic nervous system Sympathetic Nervous System Parasympathetic Nervous System Autonomic Nervous System S y m p a th e tic “F ig h t o r F lig h t” Pa ra sym p a thetic “Rest a nd D ig est” Autonomic nervous system Divisions of the Nervous System Central Nervous System Spinal Cord Transmits signals from the brain to the rest of the body Reflexes Brain Weighs about 3 lbs Contains 100,000,000,000 neurons Command center “Home of the mind” 10/3/10...
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This note was uploaded on 11/08/2010 for the course PSC PSC 001 taught by Professor Paoli during the Spring '09 term at UC Davis.

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Lecture 3--Nervous System 6 slides - 10/3/10 1 B IOLOGICAL...

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