The nervous system

"What is "real"? How do you define "real"?"

Morpheus

Epistemological views

• Realist: mind independent object.

• Idealist: mind dependent object.

Neuron

• Receive information.

• Integrate information.

• Conduct signal.

• Transmit signal.

Kinds of neurons

• Sensory: respond to stimulus.

• Association: receive signals for many sources.

• Motor: activate muscles or glands.

• Effectors: muscles or glands perform the response.

Neurotransmitter

• Chemical that change the inner negative polarity of the neuron.

• Iniates the nerve impulse.

• Acetycoline, norephinephrine: activates cardiac muscle cells.

Central Nervous System (CNS)

• Receives and processes information.

• Brain.

• Spinal cord.

• Receives and processes sensory information.

• Initiates responses.• Stores memories.• Generates thoughts and emotions.• Left hemisphere: right, language and

math.• Right hemisphere: left, spatial perception,

music, creativity.

Spinal cord

• Conducts signals to and from the brain.

• Controls reflex activities.

Peripheral Nervous System

• Transmits signals between the CNS and the rest of the body.

• Somatic Nervous System

• Autonomic Nervous System

Somatic Nervous System

• Controls voluntary movements by activating skeletal muscles.

Autonomic Nervous System

• Controls involuntary responses by influencing organs, glands, and smooth tissue.

• Sympathetic division: stressful activity.

• Parasympathetic division: maintanance activities.

The nervous system

Documents

Transcript of The nervous system

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