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16 Cards in this Set
- Front
- Back
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neuron
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nerve cell that sends and receives impulses.neurons control sensory,relay transmitting,motor senses,send message to brain activity
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peripheral nervous system
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nerves outside brain &spinal cord
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central nervous system
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brain & spinal cord
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12 parts of cranial nerve conduct impulse
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brain&head,neck,chest&abdomen,smell,vision,hearing,pain,touch,temperature,pressure,voluntary&involuntary muscle control
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what is 31 pains of spinal nerves affect
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skin,extremities, internal body structure that connect to cranial nerves
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cerebrum
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largest part of the brain divided left and right hemisphere
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cerebral cortex
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outside if cerebrum;controls highest function such as reasoning, memory,speech,consciousness, voluntary muscle movement
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cerebellum
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regulates and coordinates body movement in an organized manner
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brain stem
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connects cerebrum to spinal cord.medulla controls heart rate,respirations,blood vessels,coughing, vomiting
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meninges
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dura mater,arachial,pia mater. space between middle and inner layer contains cerebral spinal cord
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neurotransmitters
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chemical that enable message to pass from one cell to another.
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spinal cord
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nerves enter and leaves the spinal cord carrying impulses to and from control centers
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cerebrospinal fluid
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flows around the brain and spinal cord. bathes the CNS as tissue fluid and cushions it against shock and possible injury
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autonomic nervous system (ANS)
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special pathway in cranial and spinal nerves.the control center brain stem.
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what are two parts of ANS
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sympathetic fibers and parasympathetic fibers
sympathetic fibers stimulate activities to prepare the body for emergency situations such as to fight or flight.parasympathetic fibers control usual functions such as moderate heartbeat, digestion, elimination, respiration and glandular activity |
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sensory receptors
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ends of the dendrites carry sense to the CNS. some in joints and bring info to the brain
skin carry sense of pain,heat,pressure and cold nose carry sense of smell tongue carry sense of taste |
