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Quiz

Week 3

Optom Life 11 Fragen

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Fragen in diesem Quiz (11)

  1. 1The connective tissue sheath surrounding a skeletal muscle fibre is the:
    1. Aendomysium
    2. Bepineurium
    3. Cepimysium
    4. Dperimysium
    5. Eectomysium
  2. 2A Schwann cell:
    1. Acontains prominent Nissl substance
    2. Bcan myelinate only a single axon in the CNS
    3. Ccan myelinate many axons in the PNS
    4. Dcan wrap around many unmyelinated axons in the PNS
    5. Esurrounds perikarya in ganglia
  3. 3A sarcomere:
    1. Ais the smallest contractile unit of a myofilament
    2. Bis the region of a myofilament between successive Z discs
    3. Cis composed of the myofibres actin and myosin
    4. Dis not found in smooth muscle cells
    5. Eis composed of thick and thin myofibrils
  4. 4Smooth muscle cells:
    1. Acontain irregularly-distributed actin and myosin myofilaments
    2. Bare up to 30 cm long
    3. Ccontain myofibrils and sarcomeres
    4. Dhave multiple, centrally-located nuclei
    5. Eare not found in association with the eye
  5. 5Bipolar neurons:
    1. Aare multipolar neurons that are experiencing a depressive episode
    2. Bhave a cell body that lies off to one side in a ganglion
    3. Care the most common anatomical class of neuron
    4. Dare found in the retina
    5. Eare up to 1 m long
  6. 6When a skeletal muscle fibre contracts:
    1. Athe width of the H and A bands decreases, but the I band stays the same
    2. Bthe width of the A and I bands decreases, but the H band stays the same
    3. Cthe width of the H, I and A bands decreases
    4. Dthe width of the H and I bands decreases, but the A band stays the same
    5. Ethe width of the A band decreases
  7. 7Astrocytes:
    1. Aensheath blood vessels in the brain with their processes
    2. Bdo not contact neurons
    3. Ccan form myelin sheaths around multiple axons
    4. Dare the structural basis of the blood-brain barrier
    5. Ecan form myelin sheaths around single axons
  8. 8In the human, skeletal muscle fibres:
    1. Acontain sarcoplasmic reticulum and Z tubules
    2. Bhave many mitochondria
    3. Ccan be up to 1 m long
    4. Dhave a single nucleus located in the middle of the cell
    5. Ehave many nuclei located in the middle of the cell
  9. 9In the organisational hierarchy of skeletal muscle, the order from most complex to least complex is:
    1. Amuscle, fascicle, muscle fibre, myofilament, myofibril
    2. Bmuscle, fascicle, muscle fibre, myofibril, myofilament
    3. Cmuscle cell, fascicle, muscle fibre, myofilament, myofibril
    4. Dfascicle, muscle cell, muscle fibre, myofilament, myofibril
    5. Emuscle fibre, muscle cell, fascicle, myofilament, myofibril
  10. 10Identify the INCORRECT statement: Oligodendrocytes:
    1. Ahave multiple processes, each of which forms a myelin sheath around an axon
    2. Bare only found in the CNS
    3. Cabsorb and recycle neurotransmitters
    4. Dare located in white matter
    5. Eproduce myelin sheaths that abut adjoining myelin sheaths at nodes of Ranvier

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Beschreibung
Anatomy and Histology (Quiz) Quiz am Week 3, erstellt von Optom Life am 06/06/2017.
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English
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