Download Biology and behavior

Nervous System
Central
Nervous
System
(CNS)
Peripheral
Nervous
System
(PNS)
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The Nervous System
Nervous System: Consists of all the nerve cells. It is
the body’s speedy, electrochemical communication
system.
Central Nervous System (CNS): the brain and
spinal cord.
Peripheral Nervous System (PNS): the sensory and
motor neurons that connect the central nervous
system (CNS) to the rest of the body.
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The Nervous System
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Peripheral Nervous System
Somatic Nervous System: The division of the
peripheral nervous system that controls the body’s
skeletal muscles.
Autonomic Nervous System: Part of the PNS that
controls the glands and other muscles.
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Autonomic Nervous System (ANS)
Sympathetic Nervous System: Division of the
ANS that arouses the body, mobilizing its
energy in stressful situations.
Parasympathetic Nervous System: Division of
the ANS that calms the body, conserving its
energy.
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Autonomic Nervous System (ANS)
Sympathetic NS
“Arouses”
(fight-or-flight)
Parasympathetic NS
“Calms”
(rest and digest)
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The Endocrine System
The Endocrine
System is the body’s
“slow” chemical
communication
system.
Communication is
carried out by
hormones
synthesized by a set
of glands.
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Neuron Anatomy
Synapses: Send electrical impulses to
neighboring neurons.
2. Myelin sheaths: Cover the axon and work like
insulation to help keep electrical signals inside the
cell, which allows them to move more quickly.
3. Axon: Transfers electrical impulse signals from
the cell body to the synapse.
4. Soma: The cell body which contains most of the
cell’s organelles
5. Nucleus: Contains the cell’s DNA
6. Dendrites: Receive electrical impulses from
neighboring neurons.
1.
Central Nervous
System
Brain
Frontal lobe
1.
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•
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2.
Movement of the body
Personality
Concentration, planning, problem solving
Meaning of words
Emotional reactions
Speech
Smell
Parietal lobe
• Touch and pressure
• Taste
• Body awareness
3.
Occipital lobe
 Sight
Brain
4.
Cerebellum
• Latin for little brain
• Fine motor (muscle) control
• Balance and coordination (avoid objects and
keep from falling)
5.
Temporal lobe




6.
Receive & processes sound
Recognizing faces
Emotion
Long term memory
Limbic Lobe
 Located inside the brain
 Controls emotions like happiness, sadness and
love