A&P Fundamental of the Nervous System Chp.11

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Jessa
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207006
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A&P Fundamental of the Nervous System Chp.11
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2013-03-18 21:28:08
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Anatomy Physiology Nervous System
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Nervous System
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  1. What are the 3 Primary functions of the nervous system?
    • Sensory input
    • integration
    • motor output
  2. What function of the nervous system monitors stimuli, changes inside and outside the environment?
    Sensory 
  3. What function of the nervous system processes and interprets sensory input by different parts of the CNS?
    integration
  4. What function of the nervous system is a response to stimuli sent by the CNS to an effector organ (muscle,gland or internal organ)
    Motor output
  5. what division of the NS contains the brain and spinal cord? 
    *integrating and control center
    *interprets sensory input/dictates motor output
    Central Nervous System CNS
  6. What division of the NS is NOT protected by the  skull or spine? 
    *links all parts of the body to the CNS 
    *nerves extend from the brain and the spinal cord
    Peripheral Nervous System PNS
  7. What are the two groups of  Peripheral Nerves?
    • Spinal Nerves-carry impulses to and from spinal cord
    • Cranial Nerves- carry impulses to and from brain
  8. What are the two functional subdivisions of the PNS?
    • Sensory (afferent) Division
    • Motor (efferent) Division
  9. What PNS subdivision consist of nerve fibers that carries impulses toward the CNS from receptors located throughout the body?
    Sensory (afferent) Division
  10. What are the two sensory fibers and their functions?
    • Somatic sensory fibers: convey impulses from the skin,skeletal muscle and joints
    • Visceral sensory fibers: transmit impulses from the visceral organs
  11. What PNS subdivision consist of nerve fibers that transmits impulses from the CNS to effector organs, these impulses activate muscles to contract and glands to secrete?
    Motor (efferent) Division
  12. What are the two main parts to the motor division of the PNS?
    • Somatic Nervous System
    • Autonomic Nervous System
  13. What part of the motor division is voluntary and consist of somatic motor nerve fibers that conduct impulses from the CNS to skeletal muscles?
    Somatic Nervous System
  14. What part of the motor division is involuntary and consist of visceral motor nerve fibers that conduct impulses from the CNS to glands and organs, regulates the activity of smooth muscle, cardiac muscle and glands?
    Autonomic Nervous System
  15. What are the two subdivisions of the ANS that for the most part oppose one another in controlling involuntary functions, whatever one stimulates the other inhibits?
    • Sympathetic division ( fight or flight)
    • Parasympathetic division ( rest and digest)
  16. What are the two types of nerve cells?
    • neuroglia
    • neurons
  17. What nerve cell surrounds and wraps neurons for protection and support? 
    neuroglia
  18. what nerve cell is excitable ( responds to stimuli) and transmit electrical impulses?
    neurons
  19. What are the 6 types of Neuroglia cells?
    • Astrocytes
    • Microglia 
    • ependymal cells
    • oligodendrocytes
    • satellite cells
    • Schwann cells
  20. What neuroglia are found in the CNS?
    • astrocytes
    • microglia
    • ependymal cells
    • oligodenrocytes
  21. What neuroglia cells are in the PNS?
    • Satellite Cells
    • Schwann Cells
  22. What neuroglia cell forms a barrier known as the blood brain barrier, recycle and recaptures neurotransmitters and soak up leaked ions (potassium)? Most abundant neuroglia cell...
    Astrocytes
  23. What neuroglia cell monitors health of neurons and defensively protects them, these cells are found at injury sites.
    Microglia
  24. What neuroglia lines the central cavities of the brain and spinal cord, ciliated and play a role in formation of cerebrospinal fluid CSF and circulation.
    Ependymal cell
  25. what neuroglia cells myelinates an axon of an individual axon in the CNS?
    oligodendrocytes
  26. What neuroglia cells myelinate  groups of axons (as many as 60) in the PNS?
    Schwann cells
  27. What neuroglia cells are in the PNS and have unknown functions, found surrounding neuron bodies, thought to have many of the same functions as astrocytes in the CNS?
    Satellite Cells
  28. *a functional unit of the nervous system
    *requires abundant oxygen and glucose
    *specialized nerve cell that generates, conducts and transmits messages (nerve impulses, AP)
    * can not survive more than a few minutes w/out oxygen
    Neuron
  29. This structure of a neuron is also called the Soma and Perikaryon, mostly located in the CNS protected by skull and spine
    *lacks centrioles
    *contains unique rough ER (nissle bodies) (chromatophilic substance)-color loving 
    Neuron Cell Body
  30. Clusters of cell bodies w/in the CNS are called what?
    nuclei
  31. Clusters of cell bodies in the PNS are called what?
    • ganglia (outside protection of skull and spine)
    • means-knot on a string, swelling
  32. many branch like, short receptive input regions of a neuron, convey messages toward the cell body
    dendrites
  33. single long output extension of a neuron, can vary in length up to 4 ft, transmits messages away from the cell body
    axon

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