Learning Target I can describe the parts of the nervous system
and explain how they work together.
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The Control Center What do brushing your teeth, riding a bike,
and solving a math problem all have in common? All result from
instructions from your bodys control center. Neurons- Specialized
cells that make up the nervous system Unlike body cells they CANNOT
repair or replace themselves if they are damaged Neurons carry
messages to and from different parts of the body Reflex arc
Slide 4
Neuron
Slide 5
Parts of the Nervous System Central Nervous System (CNS)-
includes the brain and the spinal cord. Peripheral Nervous System
(PNS)- includes the nerves that connect the CNS to all parts of the
body. It carries messages to and from the CNS
Slide 6
Nervous System
Slide 7
Central Nervous System Brain- the mass of neurons that controls
all actions, emotions, thoughts, and memory. Weighs about 3 pounds
Blood vessels cover your brain and carry oxygen and food it needs
to work Well protected Skull Meninges - membranes that cover the
brain and spinal cord Spinal Cord- long bundle of neurons that
extend almost the entire length of the body Relays messages from
all parts of the body to the brain and from the brain to muscles
and glands Diameter of your index finger, protected by
backbone
Slide 8
Central Nervous System
Slide 9
3 Parts of the Brain Cerebrum- largest portion of the brain
controls senses, movement of muscles, thinking, and speech
Cerebellum- Sits at the back of the head under the cerebrum.
controls balance, posture, and coordination (fine motor movements)
Brain Stem- controls vital (important) body actions such as
heartbeat, breathing, blood pressure, and digestion
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Cerebrum -controls senses, movement of muscles, thinking, and
speech
Slide 11
Cerebellum- controls balance, posture, and coordination (fine
motor movements)
Slide 12
Brain Stem- controls vital (important) body actions such as
heartbeat, breathing, blood pressure, and digestion
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All 3 Parts
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Four Lobes of the Brain FRONTAL LOBE Located in front of the
central sulcus (grooves). Concerned with reasoning, planning, parts
of speech and movement (motor cortex), emotions, and
problem-solving. PARIETAL LOBE Located behind the central sulcus
(grooves). Concerned with perception of stimuli such as touch,
pressure, temperature and pain. TEMPORAL LOBE Located below the
lateral sulcus (grooves). Concerned with perception and recognition
of auditory stimuli (hearing) and memory (hippocampus). OCCIPITAL
LOBE Located at the back of the brain, behind the parietal lobe and
temporal lobe. Concerned with many aspects of vision.
Slide 15
Lobes of the Brain
Slide 16
Approximately Locations: Lobes of the Brain
Slide 17
Peripheral Nervous System Made up of many nerves that connect
the CNS to all parts of the body Peripheral nerves carry messages
to and from your muscles or organs Two main parts of the Peripheral
Nervous System (PNS) Somatic system- deals with actions you control
(voluntary) Examples- stick your arm out or stick your tongue out
Autonomic System- deals with actions you do not usually control.
(involuntary) Examples- heartbeat, breathing, digestion
