A&P Lab Histology of Nervous System

  1. Which are the structural units and are highly specialized to transmit nerve impulses from one part of the body to the other?
    Neurons
  2. What is another term for glial cells?
    Neuroglia
  3. Neuroglia found in the Central Nervous System (CNS) include ____, ____, ____, and ____ cells.
    Astrocytes, oligodendrocytes, microglia,   and ependymal cells
  4. Neuroglia found in the Peripheral Nervous System (PNS) include ____ and ____.
    • Schwann
    • satellite cells
  5. Neuroglia found in the ____  include Schwann and satellite cells
    Peripheral Nervous System
  6. Neuroglia found in the ____ include astrocytes, oligodendrocytes, microglia,   and ependymal cells
    Central Nervous System (CNS)
  7. Astrocytes are abundant most in the ____ neuralgia.
    CNS
  8. Microglial cells are ____ cells in the CNS.
    Defensive
  9. Microglial cells are defensive cells in the ___.
    CNS
  10. Ependymal Cells line ____ fluid-filled cavities.
    Cerebrospinal
  11. ____ Cells line cerebrospinal fluid-filled cavities.
    Ependymal
  12. _____ have processes that form myelin sheaths around CNS nerve fibers.
    Oligodendrocytes
  13. ____ cells and ____ cells (which form myelin) surround neurons in the PNS.
    • Satellite
    • Schwann
  14. Satellite cells and Schwann cells (which form myelin) surround ____ in the PNS.
    neurons
  15. Satellite cells and Schwann cells (which form myelin) surround neurons in the ____.
    PNS
  16. Oligodendrocytes have processes that form myelin sheaths around ____.
    CNS nerve fibers
  17. ____ are abundant most in the CNS neuralgia.
    Astrocytes
  18. Neurons contain a cell body where the ____ , neuroplasm, ____, and ____ are located
    • nucleus
    • neurofibrils
    • nissil bodies
  19. Neurofibrils are the ____ elements
    cytoskeletal
  20. ____ are the cytoskeletal elements
    Neurofibrils
  21. Nissil bodies are ____ involved in metabolic activities of the cell
    rough endoplasmic reticulum
  22. ____ are rough endoplasmic reticulum   involved in metabolic activities of the cell
    Nissil bodies
  23. ____: A cluster of neuron cell bodies found within the CNS
    Nuclei
  24. Nuclei: A cluster of _____ found within the CNS
    neuron cell bodies
  25. ____: A cluster of neuron cell bodies found outside the CNSBoth nuclei and ganglia make up gray matter
    Ganglia
  26. Ganglia: A cluster of neuron cell bodies found outside the CNS

    Both nuclei and ganglia make up ____.
    Gray matter
  27. Bundle of fibers (neuron processes):

    ____: Neuron fibers running through the CNS
    ____: Neuron fibers running through the PNS
    • Tracts
    • Nerves
  28. Bundle of fibers (neuron processes):

    Tracts: Neuron fibers running through the ____.
    Nerves: Neuron fibers running through the ___
    • CNS
    • PNS
  29. Bundle of fibers (____):

    Tracts: Neuron fibers running through the CNS
    Nerves: Neuron fibers running through the PNS
    neuron processes
  30. Two types of neuron processes:

    Dendrites: are the ____ regions that bear neurotransmitter receptors
    Axons: generate and conduct ____.
    receptive

    impulses
  31. Two types of neuron processes:

    ____: are the receptive regions that bear neurotransmitter receptors

    ____: generate and conduct impulses
    Dendrites

    Axons
  32. ____: branches of axons
    Collaterals
  33. Collaterals: branches of ____.
    axons
  34. ______: initial axon segment found beside the cell body
    Axon hillock
  35. Axon hillock: initial axon segment found beside the _____.
    cell body
  36. Axon terminals: ends of axons which form ____ with other neurons or effector cells
    synaptic clefts
  37. Axon terminals: ends of axons which form synaptic clefts with other ____ or ____ cells
    neurons

    effector
  38. _____: ends of axons which form synaptic clefts with other neurons or effector cells
    Axon terminals
  39. Myelin: ____ material that wraps most long nerves
    Fatty
  40. Axons in the PNS are wrapped by ___ cells creating the myelin sheath

    ____: the exposed plasma membrane of the Schwann cell

    Nodes of Ranvier: indentions found in the myelin sheath

    Axons in the CNS are wrapped by _____.
    • Schwann
    • Neurilemma
    • Oligodendrocytes
  41. Axons in the ___ are wrapped by Schwann cells creating the myelin sheath

    Neurilemma: the ___ plasma membrane of the Schwann cell

    ____: indentions found in the myelin sheath

    Axons in the ____ are wrapped by oligodendrocytes
    • PNS
    • Exposed
    • Nodes of Ranvier
    • CNS
  42. ___ in the PNS are wrapped by Schwann cells creating the _____.

    Neurilemma: the exposed plasma membrane of the _____.

    Nodes of Ranvier: indentions found in the myelin sheath

    Axons in the CNS are wrapped by oligodendrocytes
    • Axons
    • Myelin sheath
    • Schwann cell
  43. How an impulse travels:

    An excited ____ sends an impulse (action potential) down the axon towards the axon terminals across the ____ causing synaptic vesicles to release _____ close to the dendrites of the neighboring neuron.
    • Neuron
    • Synaptic cleft
    • Neurotransmitters
  44. How an impulse travels:

    An excited neuron sends an impulse (_____) down the axon towards the axon ____ across the synaptic cleft causing ____ to release neurotransmitters close to the dendrites of the neighboring neuron.
    • Action potential
    • Terminals
    • Synaptic vesicles
  45. How an impulse travels:

    An excited neuron sends an impulse (action potential) down the axon towards the axon terminals across the synaptic cleft causing synaptic vesicles to release neurotransmitters close to the ____ of the ____ neuron.
    • Dendrites
    • Neighboring
  46. Neurons are classified based on ____and ____.
    • Structure 
    • Function
  47. Classifying neurons by structure:

    ____ neurons: one very short process that extends from the cell body, most neurons conducting impulses to the CNS are unipolar
    Unipolar
  48. Classifying neurons by structure:

    Unipolar neurons: one very short process that extends from the cell body, most neurons conducting impulses ___ the CNS are unipolar
    to
  49. Classifying neurons by structure:
     
    ____ neurons: two processes attached to the cell body, found in the eye, ear, and olfactory mucosa
    Bipolar
  50. Classifying neurons by structure:

    Bipolar neurons: ___ processes attached to the cell body, found in the ___, ___ , and _____.
    • Two
    • Eye
    • Ear
    • Olfactory mucosa
  51. Classifying neurons by structure:

    ____ neurons: many processes from the cell body (all dendrites except for one axon process), most neurons in the brain and spinal cord are multipolar neurons
    Multipolar
  52. Classifying neurons by structure:

    Multipolar neurons: many processes from the cell body (all dendrites except for one axon process), most neurons in the ____ and ____ are multipolar neurons
    • Brain
    • Spinal cord
  53. Classification by function:

    _____ or ____ neurons: carry impulses from sensory receptors in the internal organs
    • Sensory
    • Afferent
  54. Classification by function:


    Sensory or afferent neurons: carry impulses from _____ in the internal organs
    Sensory receptors
  55. Classification by function:


    _____ or ____ neurons: carry impulses from the CNS to the internal organs, muscles, or glands
    • Motor
    • Efferent
  56. Classification by function:


    Motor or efferent neurons: carry impulses from the ___ to the internal organs, ____ , or ___.
    • CNS
    • Muscles
    • Glands
  57. Classification by function:

    ____ neurons or ____ : situated between and contribute to pathways that connect sensory and motor neurons
    • Association
    • Interneurons
  58. Classification by function:

    Association neurons or interneurons: situated between and contribute to pathways that connect ____ and ____ neurons
    • Sensory
    • Motor
  59. Each nerve fiber is surrounded by ____, a delicate connective tissue sheath
    Endoneurium
  60. Each ____ is surrounded by endoneurium, a delicate connective tissue sheath
    nerve fiber
  61. Each nerve fiber is surrounded by endoneurium, a delicate ____ tissue sheath
    Connective
  62. Bundles of fibers (____) are bounded by ____, a coarser connective tissue
    • Fascicle
    • Perineurium
  63. Bundles of fibers (fascicle) are bounded by ____, a ___ connective tissue
    • Perineurium
    • Coarser
  64. Bundles of fascicles (____) are bounded by epineurium, a white fibrous connective tissue
    Nerve
  65. Bundles of fascicles (nerve) are bounded by ____, a white fibrous connective tissue
    Epineurium
  66. Sensory or afferent nerves: carry only sensory processes and carry impulses only ____ the CNS

    Mixed nerves: carry both sensory and motor processes; most nerves in the body
    Toward
  67. Sensory or afferent nerves: carry only sensory processes and carry impulses only toward the CNS

    ____ nerves: carry both sensory and motor processes; most nerves in the body
    Mixed
  68. A nerve is a bundle of ____ wrapped in a connective tissue sheath that extends to and from the CNS and visceral organs or structures of the periphery body
    Neuron fibers
  69. A ____ is a bundle of neuron fibers wrapped in a connective tissue sheath that extends to and from the CNS and visceral organs or structures of the periphery body
    Nerve
  70. Although, neuroglia resembles neuron in some ways( they have fibrous cellular extensions), they are not capable of ?
    Generating and transmitting nerve impulses.
  71. Which neuralgia acts as a phagocyte?
    Microglia
  72. Which neuralgia myelinates the cytoplasmic extensions of the neurons?
    • Oligodendrocytes 
    • Schwann Cells
  73. Which neuralgia plays a role in capillary-neuron exchange and controls the chemical environment around neurons?
    Astrocytes
  74. Identify 1,2,3,4
    Image Upload 1
    • 1: Peripheral Process(axon)
    • 2: Sensory Neuron
    • 3: Interneuron
    • 4: Motor Neuron
  75. Identify 1,2,3,4
     Image Upload 2
    • 1: Afferent 
    • 2: Efferent 
    • 3: Ganglion
    • 4: Cell Body
  76. Identify 1,2,3
    Image Upload 3
    • 1: Spinal
    • 2: Central Process (axon)
    • 3: Receptive Endings
  77. Identify 1 and 2

    Image Upload 4
    • 1: Myelin Sheath
    • 2: Perineurium
  78. Identify 1 and 2 


    Image Upload 5
    • 1: Axon
    • 2: Endoneurium
  79. Identify 1,2,3
    Image Upload 6
    • 1: Epineurium 
    • 2: Fascicle 
    • 3: Blood Vessels
  80. Identify 1,2,3
    Image Upload 7
    • 1: Axon Terminals
    • 2: Nissl Bodies
    • 3: Dendrites
  81. Image Upload 8
    • Top: Axon hillock 
    • Right Most: Nucleus of Schwann Cell
    • Bottom: Schwann Cell
  82. Image Upload 9
    • 1: Node of Ranvier
    • 2: Myelin Sheath 
    • 3: Neurilemma
  83. Image Upload 10
    Golgi Apparatus
  84. Image Upload 11
    • 1: Mitochondria 
    • 2: Axon
Author
fjn900
ID
325939
Card Set
A&P Lab Histology of Nervous System
Description
Final Exam
Updated