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Quiz

Physiology II: Somatosensory System 1 - Primary Sensory Neurones and their Modalities

Matthew Coulson 13 perguntas Atualizado em 5 set 2018

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Perguntas do quiz (13)

  1. 1The Somatosensory System can be subdivided into 3 parts:
    [blank_start]Exteroceptive Division[blank_end]: Registers cutaneous sensation by numerous receptors
    [blank_start]Proprioceptive Division[blank_end]: Monitors posture and movement via receptors in muscles, tendons and joints
    [blank_start]Enteroceptive Division[blank_end]: Reports upon the internal state of the body
    1. AEnteroceptive Division
    2. BProprioceptive Division
    3. CExteroceptive Division
  2. 2Resting membrane potential is [blank_start]-90[blank_end]mV, whereras the resting potential of a neuron is [blank_start]-70[blank_end]mV.
    1. A-90
    2. B-70
  3. 3A [blank_start]nociceptor[blank_end] is a receptor that responds to potentially damaging stimuli by sending 'threat' signals to the brain
    1. Anociceptor
  4. 4[blank_start]Low threshold thermoreceptors[blank_end] mediate cold, cool, indifferent, warm and hot sensations
    [blank_start]Thermal nociceptors[blank_end] respond to extreme degrees of heat (both hot and cold)
    [blank_start]Chemical nociceptors[blank_end] responds to potentially damaging substances in tissue
    1. ALow threshold thermoreceptors
    2. BThermal nociceptors
    3. CChemical nociceptors
    4. DLow threshold chemical receptors
  5. 5Cutaneous afferent fibres in the fingertips are of a [blank_start]high[blank_end] density of innervation, each fibre having a [blank_start]small[blank_end] receptive field in order to allow a [blank_start]high[blank_end] acuity in terms of sensation.
    1. Ahigh
    2. Blow
    3. Csmall
    4. Dlarge
    5. Ehigh
    6. Flow
  6. 6Two point discrimination (spacial acuity) in higher in the [blank_start]finger tip[blank_end] but lower in the [blank_start]forearm[blank_end], due to the differing sizes of the afferent fibres' receptive fields.
    1. Afinger tip
    2. Bforearm
    3. Cforearm
    4. Dfinger tip
  7. 7As receptive field size increases, spatial acuity [blank_start]decreases[blank_end].
    1. Adecreases
    2. Bincreases
  8. 8Which layer of the epidermis contains merkel cells?
    1. ABasal layer
    2. BKeratin layer
    3. CGranular layer
    4. DPrickle cell layer
  9. 9[blank_start]Merkel cells[blank_end]: Sensitive to sustained pressure, texture and edges of objects
    [blank_start]Meissner corpuscles[blank_end]: Sensitive to stroking, flutter & low frequency vibration
    [blank_start]Pacinian corpuscles[blank_end]: Very sensitive to higher frequency vibration, act as event detectors during object manipulation
    [blank_start]Ruffini endings[blank_end]: Sensitive to shearing forces (e.g. drag)
    1. AMerkel cells
    2. BMeissner corpuscles
    3. CPacinian corpuscles
    4. DRuffini endings
  10. 10Hairless skin is referred to as [blank_start]glabrous[blank_end] skin
    1. Aglabrous

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Somatosensory system 1: Primary sensory neurones and their modalities given on 3/5/18
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English
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Criado em 5 set 2018 · atualizado em 5 set 2018
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