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21 Cards in this Set
- Front
- Back
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What are the components of the central nervous system (CNS)?
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The brain and spinal cord, including the nuclei and cell bodies of most nerve cells.
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What is the peripheral nervous system?
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The 31 pairs of spinal nerves and 12 pairs of cranial nerves that link the body to the central nervous system.
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What is the cerebrum?
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The largest part of the brain - 75% by volume. Controls voluntary movement and conscious thought.
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What is the cerebellum?
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The portion of the brain immediately beneath the cerebrum. Coordinates body movements.
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What is the brain stem?
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The most primitive part of the CNS. Controls virtually all basic life functions; breathing, respiration. Best protected part of the CNS
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What is the meninges?
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Three distinct layers of tissue that surround and protect the brain and spinal cord in the skull and spinal column.
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What is dura mater?
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The outer layer of the meninges. A tough fibrous layer resembling leather.
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What is cerebral spinal fluid?
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A shock absorbing fluid in which the brain and spinal cord are suspended. Produced in the third ventricle of the brain.
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What are the functions of the 31 pairs of spinal nerves?
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Conduct nerve impulses from the skin and other organs. conduct nerve impulses to the muscles.
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What are the functions of the 12 pairs of cranial nerves?
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Transmit information directly to and from the brain, especially sensory information including; sight, taste, smell, hearing, and facial expressions.
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What are sensory nerves?
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Nerves that transmit sensory information from the periphery to the CNS. Capable of perceiving only one type of information.
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What are motor nerves?
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Nerves that that acrry impulses from the CNS to the muscles.
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What are connecting nerves?
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Nerves in the brain and spinal cord that connect motor and sensory nerves.
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What is the somatic nervous system?
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The neural network that controls voluntary actions.
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What is the autonomic nervous system?
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The neural network that controls involuntary activity; heartbeat, peristalsis, etc.
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What is a concussion?
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A temporary loss or alteration of the brains ability to function without actual physical damage to the brain.
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What is retrograde amnesia?
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The inability to remember the events leading up to a head injury.
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What is anterograde (post traumatic) amnesia?
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The inability to remember events after an injury.
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What is a contusion?
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A bruise, swelling.
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What is cerebral edema?
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Swelling of the brain. One of the most common complications associated with head injuries. Aggravated by low oxygen levels in the blood.
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What is distraction?
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The action of pulling the spine along it's length as with hangings.
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