2330456
Description
Quiz by #أطباء_2020 , updated more than 1 year ago
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Created by #أطباء_2020
over 9 years ago
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Question 1
Question
Which of the following is true of the vascular layer of the eye
Answer
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Provides a route for blood vessels and lymphatics that supply the eye
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Regulates the amount of light entering the eye
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Secretes and reabsorbs the aqueous humour
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Controls the shape of the lens
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All of above
Question 2
Question
The space between the iris and cilliary body and the lens is the:
Answer
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Anterior chamber
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Posterior chamber
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Pupil
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Posterior cavity
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B and D
Question 3
Question
In human eye, most refraction occurs when light passes through the
Answer
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Iris
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Cornea
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Lens
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Aqueous humor
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Vitreous humor
Question 4
Question
Linear acceleration in the vertical plane is signaled by hair cells in
Answer
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Anterior semicircular canal
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Saccule
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Posterior semicircular canal
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Utricle
Question 5
Question
Alpha block is produced by
Answer
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Mental arithmetic
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Stimulation of ascending reticular activating system
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Opening one eye
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During sleep
Question 6
Question
Hypothalamus doesn't play a prominent role in the regulation of
Answer
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Food and water intake
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Temperature
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Respiration
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Osmolality
Question 7
Question
The categorical hemisphere is chiefly concerned with
Answer
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Language
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Recognition of faces
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Stereognosis
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Spatiotemporal relations
Question 8
Question
Damage to what region of the brain affects recent memory,
Which is the process in which short-term memory is converted to long-term memory
Answer
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Pons
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Medulla
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Substantia nigra
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Hypothalamus
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Hippocampus
Question 9
Question
Regarding sleep :
Answer
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Slow wave sleep reflects mental rest
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Slow wave sleep is associated with rapid eye movement
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During slow wave sleep, the secretion of GH is decreased
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REM sleep is associated with marked decrease in muscle tone
Question 10
Question
The ciliary muscle contracts to:
Answer
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Control amount of light reaching the retina
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Adjust the shape of the lens for distant vision
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Adjust the shape of the lens for near vision
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Control the production of aqueous humor
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Adjust the shape of the cornea and vitreous
Question 11
Question
The transparent anterior portion of the eye is :
Answer
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Choroid
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Ciliary body
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Cornea
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Iris
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Retina
Question 12
Question
When a bright light shines in the eye, what reflex action takes place
Answer
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Ciliary body secretes tears
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Extrinsic eye muscles contract
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Radial muscles of the iris contract
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Ciliary muscles contract
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Circular muscles of iris contract
Question 13
Question
What is the function of the fatty layer in tears:
Answer
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Make photoreceptor cells
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Make mucous
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Produce cilia to wipe dust away from eye surface
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Make an oily secretion to lubricate the eye & prevents rapid tear evaporation
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Promote lid closure reflexes
Question 14
Question
Rods and cones are distributed over the entire retina except for the
Answer
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Optic disc
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Choroids
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Ora serrata
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Sclera
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Lens
Question 15
Question
What is the ability of the eye to focus specifically on close objects (less than 20 feet away )
Answer
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Adaptation
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Accommodation
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Refraction
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Synthesis
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Indentation
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