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HBF & vision

#أطباء_2020 15 questions

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Questions in this quiz (15)

  1. 1Which of the following is true of the vascular layer of the eye
    1. AProvides a route for blood vessels and lymphatics that supply the eye
    2. BRegulates the amount of light entering the eye
    3. CSecretes and reabsorbs the aqueous humour
    4. DControls the shape of the lens
    5. EAll of above
  2. 2The space between the iris and cilliary body and the lens is the:
    1. AAnterior chamber
    2. BPosterior chamber
    3. CPupil
    4. DPosterior cavity
    5. EB and D
  3. 3In human eye, most refraction occurs when light passes through the
    1. AIris
    2. BCornea
    3. CLens
    4. DAqueous humor
    5. EVitreous humor
  4. 4Linear acceleration in the vertical plane is signaled by hair cells in
    1. AAnterior semicircular canal
    2. BSaccule
    3. CPosterior semicircular canal
    4. DUtricle
  5. 5Alpha block is produced by
    1. AMental arithmetic
    2. BStimulation of ascending reticular activating system
    3. COpening one eye
    4. DDuring sleep
  6. 6Hypothalamus doesn't play a prominent role in the regulation of
    1. AFood and water intake
    2. BTemperature
    3. CRespiration
    4. DOsmolality
  7. 7The categorical hemisphere is chiefly concerned with
    1. ALanguage
    2. BRecognition of faces
    3. CStereognosis
    4. DSpatiotemporal relations
  8. 8Damage to what region of the brain affects recent memory,
    Which is the process in which short-term memory is converted to long-term memory
    1. APons
    2. BMedulla
    3. CSubstantia nigra
    4. DHypothalamus
    5. EHippocampus
  9. 9Regarding sleep :
    1. ASlow wave sleep reflects mental rest
    2. BSlow wave sleep is associated with rapid eye movement
    3. CDuring slow wave sleep, the secretion of GH is decreased
    4. DREM sleep is associated with marked decrease in muscle tone
  10. 10The ciliary muscle contracts to:
    1. AControl amount of light reaching the retina
    2. BAdjust the shape of the lens for distant vision
    3. CAdjust the shape of the lens for near vision
    4. DControl the production of aqueous humor
    5. EAdjust the shape of the cornea and vitreous

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