WorksheetsFINAL CHPT 12 Quiz 1
Total questions: 25
Worksheet time: 15mins
Cones are more sensitive to light than rods, but rods are important for color vision.
True
False
What condition is due to an abnormality in the curvature of the lens or cornea, resulting in some areas of blurry vision?
Presbyopia
Myopia
Hyperopia
Astigmatism
When does refraction of light occur?
When light passes at a right angle between two media with identical densities.
When light passes at an angle between two media with identical densities.
When light passes at an angle from one medium to another with a different density.
When light passes at a right angle from one medium to another with a different density.
Where is the spiral organ located?
In the cochlear duct
In the scala tympani
In the scala vestibuli
What structure contains the receptors for the sense of hearing?
Semicircular canals
Ampulla
Utricle
Spiral organ
The area of the retina with the sharpest vision is the optic disc.
True
False
What is the destination of fibers of the spinothalamic tract transmitting pain and temperature information?
Hypothalamus
Brainstem
Thalamus
Cerebellum
Jared has been an avid fan of rock music for many years and has attended numerous concerts, getting as close to the stage as possible. He has never worn earplugs or protective earwear. Now in his 50s, he has become hard-of-hearing and can no longer detect quiet sounds or low talking. How might his symptoms be explained?
He must have used the antibiotic streptomycin while at a concert which weakened the structures in his inner ear, making them less able to respond to sound waves.
He has developed a brain tumor that puts pressure on the vestibulocochlear nerve.
His tympanic membrane has hardened.
His hair cells are permanently damaged and desensitized to loud sounds.
Tears contain an enzyme that reduces the risk of eye infection.
True
False
Thermoreceptors are stimulated by changes in chemical concentrations.
True
False
The interpretation of sensory input by the brain is referred to as (a) .
Which receptor/stimulus pair is correct?
Baroreceptors: stimulated when injury occurs to nearby tissue.
Thermoreceptors: stimulated by light energy.
Proprioceptors: stimulated by changes in tension in muscles and tendons.
Nociceptors: stimulated by increase in blood pressure.
The olfactory receptors are examples of what class of receptor?
Proprioceptors
Mechanoreceptors
Chemoreceptors
Thermoreceptors
The decreased responsiveness to an ongoing stimulus is called__________.
Where are receptors for the general senses located?
Only in the integumentary system
Widely distributed throughout the body
Throughout the visceral organs
In a few clusters within the head
The optic disc is medial to the fovea centralis and is the site from which nerve fibers from the retina leave the eye and become part of the optic nerve.
True
False
In hyperopia, the eyeball is too short and the focal point is in front of the retina.
True
False
Olfactory receptors are examples of what class of sensory receptor?
Mechanoreceptors
Proprioceptors
Thermoreceptors
Chemoreceptors
What is the cause of colorblindness?
A stiff lens
Lack of a type of cone
Misshapend cornea
Lack of rods
What structure produces tears?
Conjunctiva
Lacrimal sac
Nasolacrimal duct
Lacrimal gland
The sense of taste requires that molecules bind to receptor proteins located__________.
in taste pores
on cell bodies of taste cells
on sensory axons of the taste buds
The conjunctiva is a layer of tissue that lines the inner surface of the eyelids and covers most of the anterior surface of the eye.
True
False
What causes the lens of the eye to thicken?
Pupillary constrictors relax.
Ciliary processes relax.
Ciliary muscles contract.
Suspensory ligaments pull on the lens capsule.
As you are going to class, another student is moving towards you. You experience__________ as your retinal cones detect color and send impulses to your visual cortex. Then you experience__________ when you become aware that the student is wearing a red coat.
perception; projection
sensation; projection
perception; sensation
sensation; perception
What condition might be associated with a person thinking of the days of the week and months of the year as particular colors?
Macular degeneration
Neuropathy
Nystagmus
Synesthesia
