A&P Chapter 15
(answers) c g a h b i
iris- lens- sclera- area of retina specialized for detailed vision- cornea- portion of the retina that contains no photoreceptors-
What is not part of the inner ear?
tympanic membrane
What separates the outer ear from the middle ear?
tympanic membrane
As sound waves travel into the ear, they pass from the auditory canal to the:
tympanic membrane, auditory ossicles, oval window, perilymph, scala vestibuli of the cochlea
The most taste buds are present in:
vallate (circumvallate) papillae
What cranial nerve carried information about hearing and head movement to the brain?
vestibulocochlear nerve (CN VIII)
Which cranial nerve is responsible for transmitting information about sounds and head position and movement to the brain?
vestibulocochlear nerve (CN VIII)
What gelatinous mass helps maintain the shape of the eyeball?
vitreous humor
The three types of cones are designated:
red, green, and blue
Three types of cones are designed _______________?
red,green, and blue
What pigment is derived from vitamin A?
retinal
Having to adjust to a dark room after walking in from bright light is because:
rods exposed to bright light need time to regenerate rhodopsin
What taste sensation results when sodium ions enter gustatory cells through sodium ion channel receptors and the cell depolarizes?
salty
Which of the following demonstrates static equilibrium?
sitting in a movie theater to watch a film
Where are the general senses located?
skin
Olfaction is the sense of ____________________.
smell
Olfaction is the sense of:
smell
Which of the following is NOT a taste sensation?
spicy
Which of the following is NOT one of the auditory ossicles?
stapedius
Which extrinsic eye muscle move the eye inferiorly?
superior oblique and inferior rectus
What gland secretes oil to prevent the eyelids from sticking together?
tarsal gland
Where does the conscious awareness of sound begin, along with the analysis of its pitch, location, and loudness?
temporal lobe
To what part of the brain are both general and most special senses carried?
thalamus
The sense of equilibrium does NOT depend on input from:
the cochlea
What is the function of the lens?
the lens focuses light on the retina
[Knowledge] In both general and special sensation ___________________.
the signal is carried by sensory neurons
(answer) hyperopia
The condition in the figure is _________.
The ability of the lens to change its shape from flattened to round is known as ________________.
accommodation
The ability of the lens to change its shape from flattened to round is known as:
accommodation
The olfactory nerves (CN I) are formed by ______________________.
axons of the olfactory neurons
The loudness of sound is determined by the vibrations of the ____________.
basilar membrane
The loudness of sound is determined by the vibrations of the:
basilar membrane
What secretes the aqueous humor?
ciliary body
What part of the inner ear is involved in hearing?
cochlea
What type of photoreceptor cell perceives color?
cone
What type of photoreceptor cell perceives colors?
cone
While viewing a colorful painting in a museum, you will mostly use your ______________.
cones
The sclera is continuous with a transparent layer over the anterior eye known as the ____________________.
cornea
The sclera is continuous with transparent layer over the anterior eye known as the:
cornea
Which of the following parts of the eye refract light to focus it on the retina?
cornea and lens
What nerves carry information about the special senses to the CNS?
cranial nerves only
What detects dynamic equilibrium?
crista ampullaris
Ceruminous glands secrete __________________.
ear wax
Which of the following disorders might result in an inability to sense taste from the anterior two-thirds of the tongue?
facial nerve palsy
The three layers of the eyeball, from outer to inner, are __________________.
fibrous, vascular, and neural layers
The three layers of the eyeball, from outer to inner, are:
fibrous, vascular, and neural layers
The area of the retina that contains a high density of photoreceptors and enables us to focus on a particular object is called _____________.
fovea centralis
Which cell has receptors specialized to detect different tastes?
gustatory cell
Specialized epithelial cells that contain receptors to detect taste are called ____________.
gustatory cells
Taste is detected when chemicals bind receptors on the microvilli of:
gustatory cells
Damage of the hair cells of the spiral organ (organ of Corti) can result in a loss of:
hearing
In the presence of light, photoreceptors __________________________.
hyperpolarize
What part of the eye controls the amount of light entering through the pupil?
iris
Which of the following is a structure from vascular layer of the eyeball?
iris
Place the following steps of nerve impulses in the olfaction pathway in order. 1) primary olfactory cortex in the temporal lobe 2) olfactory nerve 3) olfactory neurons 4) olfactory bulb
3,2,4,1
The receptor cells for static equilibrium are located in the _______________.
maculare of the utricle and saccule of the vestibule
Which auditory ossicle is connected to the tympanic membrane?
malleus
The activation of olfactory receptors requires that the odorant become immersed in:
mucus
Neural sensory signals are relayed to the thalamus, except for the sensation of ________________.
olfaction
Which of the following special senses is NOT processed by the thalamus?
olfaction
Where is the primary gustatory cortex located?
parietal lobe
Which of the following structures allows the pressure in the middle ear to equalize with the pressure in the outer ear?
pharyngotympanic tube
Determine the correct order that light, and then an action potential, travels as it strikes the retina.
photoreceptor cells, bipolar cells, retinal ganglion cells, optic nerve
When a photoreceptor cell is stimulated by light:
photoreceptor hyperpolarizes as sodium ion channels close
The optic disc is known as the blind spot because:
photoreceptors are absent from the optic disc
