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24 Cards in this Set
- Front
- Back
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What does the nervous system consist of? |
the brain, the spinal cord, the nerves, and the sensory organs. |
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What two parts is the nervous system divided into? |
The central nervous system (CNS) and the peripheral nervous system (PNS). |
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What is the CNS made of and what is it responsible for? |
It is made of the brain and spinal cord and is responsible for processing/storing info, decision making, and issuing commands. |
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What is the PNS made of and what is it responsible for? |
made of cranial and spinal nerves that extend beyond the CNS and is responsible for carrying signals to and from the spinal cord and brain. |
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Where do two neurons meet or where do they meet other cells? |
synapses |
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What are the specialized senses? |
hearing, sight, balance, smell, and taste |
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What are the general senses? |
touch, pain, and temp. |
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What are the two parts of the PNS? |
The somatic nervous system (SNS) and the autonomic nervous system (ANS). |
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Which part of the PNS can we consciously control? |
The Sensory-Somatic Nervous System |
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Which part of the PNS cannot be consciously controlled? |
The Autonomic Nervous System |
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What is the Autonomic Nervous System further divided into? |
the sympathetic and parasympathetic. |
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what reaction does the sympathetic nervous system form? |
the fight or flight reaction. |
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What is the parasympathetic nervous system responsible for? |
activities that occur when the body is at rest. |
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which are active when a person is excited or scared? |
the sympathetic nerves |
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which are active when a person is eating or at rest? |
the parasympathetic nerves |
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What does the sensory-somatic nervous system consist of? |
12 pairs of cranial nerves, 31 pairs of spinal nerves, and ganglia (collection of nerve cell bodies). |
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Nerve cells have ___________ that receive stimuli from the internal and external environment and bring those stimuli to the ________________ for interpretation. |
dendrites, neurons |
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How does the axon of nerve cells connect one neuron with another? |
Over a fluid filled gap called a synapse. |
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What happens at the synapse? |
chemical neurotransmitters pass through the synapse to transmit an impulse to another neuron. |
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What are the three main functions of the nervous system? |
to provide sensory, motor, and integrative functions within the body. |
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The sensory function includes feeling: |
pain, heat, and other stimuli |
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What is it called when the body senses pain and automatically withdraws from it? |
a reflex |
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How does the motor function serve the body? |
it carries electrical impulses from the CNS to the effectors (glands and muscles) and decisions are physically acted upon. |
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How does the integrative function work? |
It works to join together sensory input with already stored memories. |
