Eyes and Ears

Which of the following is NOT one of the special senses?

• Touch

• Vision

• Hearing

• Taste

What is the primary function of the lacrimal apparatus in the eye?

• To produce tears

• To regulate light entry

• To form the iris

• To control eye movement

Which part of the eye is responsible for adjusting the shape of the lens?

• Retina

• Cornea

• Ciliary body

• Sclera

What is the primary function of the choroid layer in the eye?

• Regulation of light entry

• Production of tears

• Blood-rich nutritive layer

• Adjustment of the lens shape

Where are the majority of cones found in the retina?

• Peripheral vision

• Edges of the retina

• Fovea centralis

• Optic disk

Which of the following is true about rods in the retina?

• Responsible for detailed color vision

• Most sensitive to bright light

• Found in the fovea centralis

• Allow dim light vision and peripheral vision

What is the role of opponent cells in the retina?

• Produce tears

• Compare signals from different cones

• Adjust lens shape

• Control eye movement

Which of the following is a type of color blindness?

• Myopia

• Hyperopia

• Night blindness

• Lack of red receptors

What is the primary function of the vitreous humor in the eye?

• Keeps the eye from collapsing

• Maintains intraocular pressure

• Produces tears

• Adjusts lens shape

What occurs in myopia (nearsightedness)?

• Eyes are shorter than normal

• Eyes focus behind the retina

• Difficulty seeing objects at a distance

• Concave lenses are used to correct it