bio 109 ch 12

Which of the following statements about color vision is NOT true?

Cone cells use different retinal molecules to absorb different wavelengths of light.

Which of the following sequences represents the path by which sound waves travel through the ear?

External auditory canal, eardrum, oval window, cochlea

With regard to dynamic equilibrium and static equilibrium, we can say that ________.

Receptors in the semicircular canals are responsible for dynamic equilibrium, and receptors in the vestibule are responsible for static equilibrium.

As a generalization, which of the following can we correctly say about photoreceptors?

Rods detect dim light and cones detect color.

Which of the following statements about photoreception is true?

The brain combines signals from the different types of cone cells to differentiate the colors of the visible spectrum.

Which of the following statements about the human ear is true?

The brain interprets input from different regions of the basilar membrane as different pitches.

Which of the following statements is NOT true?

The photoreceptors are on the innermost layer (the layer closest to the center) of the retina.

The olfactory bulb is __________.

an area of the brain where olfactory receptor cells synapse with other neurons

Whether a sound is interpreted by the brain as a higher or lower pitch is determined by the ________.

anatomy of the basilar membrane

The base of the cochlear duct is formed by the __________.

basilar membrane

Which of the following is NOT part of the vestibular apparatus?

choclea

Which part of the ear generates impulses for sound?

choclea

Which of the following is an inherited disorder?

color blindness

The eye acts like a camera. Which structure or structures bend(s) the light coming into the eye so that clear, camera-like vision can be achieved?

cornea and lens

Which of the following correctly traces the path of light through the eye?

cornea, aqueous humor, pupil, lens, vitreous humor, retina

Ménière's syndrome is a condition in which __________.

dizziness and hearing loss

Which of the following sequences represents the pathway by which sound waves travel through the ear?

external auditory canal, eardrum, oval window, cochlea

True or false. The lens is the only structure in the vertebrate eye that focuses light onto the retina.

false

Which part of the eye contains the densest concentration of cone cells?

forvea

The _____ is the region of the eye where photoreceptors are most highly concentrated.

fovea

The place on the eye where we find the greatest visual acuity, and thus the place we "use" when we need to focus on details, is the ________.

fovea

Which of the following will regulate the amount of light entering the eye?

iris

Pain receptors adapt slowly or not at all because __________.

lack of adaptation is important to survival

The _____ changes shape to focus light on the retina.

lens

Which of the following is/are involved in focusing light?

lens and cornea

Somatic sensations originate from receptors that are located in __________ of the body, and the special senses originate from receptors that are located in __________ of the body.

many areas; particular regions

Muscle spindles are __________.

mechanoreceptors

Amplifying the sound waves is the primary function of which part of the ear?

middle ear

The structure of the inner ear that converts pressure waves to impulses is the __________.

organ corti

What name is given to the opening that allows light into the interior of the eye?

pupil

The photoreceptors of the eye are __________.

rods and cones

What name is given to the tough layer that forms the "white" of the eye?

sclera

Receptor adaptation results when __________.

sensory neurons stop sending action potentials

Stereocilia are embedded in a gelatinous structure known as the ________.

tectorial membrane

When we adjust our head and eye position to carefully look at something, we are directing the image to focus on __________.

the macula

Rhodopsin is __________.

the photopigment found in rods

Receptors are classified according to __________.

the type of stimulus energy they convert

True or false. Sound waves that enter the human ear are transmitted in fluid only in the inner ear.

true

Texting while driving involves which of the following distractions?

visual, cognitive, and manual

The optic disc is the area of the eye __________.

where optic nerve exits