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14 Cards in this Set
- Front
- Back
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What structure make up the CNS? |
Brain and spinal cord |
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State the function of the central nervous system |
Recieves information from the body and external environment |
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What is the function of the peripheral nervous system? |
Sends information to CNS for processing |
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What are the two branches of the PNS? |
Autonomic nervous system and somatic nervous system |
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What nervous system works without conscious control, what works with conscious control? |
Autonomic - without conscious control Somatic - with conscious control |
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Name the two parts of the autonomic nervous system |
Parasympathetic and sympathetic |
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List the effects of the sympathetic and parasympathetic systems on the body. |
Parasympathetic rest&digest : decreases heart rate, decreases breathing rate, increases peristalsis and intestinal secretions Sympathetic fightorflight: increases heart rate, increases breathing rate, decreases peristalsis and intestinal secretions
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What does the term antagonistically mean? |
They have opposite effects |
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Which part of the brain sends impulses along the autonomic nervous system |
Medulla |
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What is the role of sensory neurons? |
Take impulses from sense organs to CNS |
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What is the role of motor neurons? |
Take impulses from CNS to muscles, bring about reflexes. |
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Describe the structure and function of a converging pathway |
Impulses from several neurons travel to one neuron, increasing sensitivity to excitatory or inhibitory signals |
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Describe the structure and function of diverging pathways |
Impulses travel from one neuron to several neurons, affecting more than one dear at a time |
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Describe how impulses travel through a reverbating pathway |
Neurons later in a pathway link with earlier neurons in a pathway and the impulse is sent through a circuit. This allows repeated stimulation of the pathway. |
