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WorksheetsEye Function
Total questions: 9
Worksheet time: 5mins
Which muscles relax to enable distant objects to be in focus?
Suspensory
Radial
Ciliary
Circular
Which muscles relax to enable near objects to be in focus?
Suspensory
Radial
Ciliary
Circular
In low light levels
Radial muscles contract and circular muscles relax
Radial muscles relax and circular muscles contract
Radial muscles contract and ciliary muscles relax
Radial muscles relax and ciliary muscles contract
When focusing on a near object...
The lens becomes short and fat
The ciliary muscles relax
The suspensory ligaments are pulled tight
The circular muscles relax
When your eye changes focus, this is called...
Focusing
Accommodation
Pupilary reflex
Having good vision
Application: Being unable to contract circular muscles effectively could result in...
Retina damage
Inability to see in dim light
Short-sightedness (inability to see distant objects)
Long-sightedness (inability to see close-up objects)
Which combination is correct?
Ciliary muscles contract -> suspensory ligaments slacken -> Lens becomes short and fat -> nearby objects in focus
Ciliary muscles contract -> suspensory ligaments tighten -> lens becomes long and thin -> distant objects in focus
Ciliary muscles relax -> suspensory ligaments tighten -> lens becomes long and thin -> nearby objects in focus
Ciliary muscles relax -> suspensory ligaments slacken -> lens becomes short and fat -> distant objects in focus
In low light, the pupil
Dilates
Constricts
Focuses in the distance
Focuses close-up
Which word should NEVER be used in relation to muscles?
Contract
Relax
Expand
