Download Lecture 5:

Lecture 5:
The Brain
Nervous System (neurons)
CNS
 Central Nervous
System
Brain + Spinal cord
PNS
 Peripheral Nervous
System
(All nerves that reach
your extremities).
The BRAIN
The brain....
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The brain is divided into two halves
called hemispheres, which
communicate with each other through
the Corpus Callosum (A bundle of
nerve fibers).
Brain structures
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Cerebral Cortex
Cerebellum
Brain Stem
Hypothalamus
Thalamus
Limbic System
Hippocampus
Basal Ganglia
Midbrain
Brain structure/function
Cerebral Cortex
Thought
 Voluntary movement
 Language
 Reasoning
 Perception
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Brain structure/function
Cerebellum
Movement
 Balance
 Posture
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Brain structure/function
Brain Stem
Breathing
 Heart rate
 Blood pressure
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Brain structure/function
Hypothalamus
Body temp.
 Emotions
 Hunger
 Thirst
 Circadian rhythms
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Brain structure/function
Thalamus
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Sensory motor integration
Brain structure/function
Limbic System
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Emotional behavior
Brain structure/function
Hippocampus
Learning
 Memory
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Brain structure/function
Basal Ganglia
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Movement coordination
Brain structure/function
Midbrain
Vision
 Audition
 Eye movement
 Body movement
 Posture
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 The
average brain weighs
about 1,400gr (3lb)..
 Each hemispheres of the
Cerebral Cortex is divided into
four lobes.
 Grooves
and bumps on the
brain surface are called Sulci
and Gyri.
 The folding of the Cerebral
Cortex increases the amounts
of Cerebral Cortex that can fit in
the skull.
http://faculty.washington.edu/chudler/lobe.html
Occipital lobe
 Located
in the back of the brain,
behind the parietal lobe and the
temporal lobe.
 Concerned with many aspects of
vision.
Frontal lobe
 Located
in the front of the central
sulcus
 Concerned with reasoning,
planning, parts of speech and
movement, emotions and problem
solving.
Temporal lobe
 Located
below the lateral fissure
 Concerned with perception and
recognition of auditory stimuli
(hearing) and memory.
Parietal lobe
 Located
behind the central sulcus
 Concerned with perception of
stimuli related to touch, pressure,
temperature and pain.
Alzheimer’s
Alzheimer’s