Question 1

The hearing receptors are located in the

Accepted Answer

The cochlear duct, also known as the organ of Corti, contains the hearing receptors. The other structures listed (ampulla, utricle, saccule, and semicircular canals) contain receptors for balance and equilibrium.

Question 2

Your young child has a middle ear infection: otitis media.There is a build-up of fluid,bacteria,and white blood cells,or pus,inside of the middle ear chamber.Why has this affected the child's hearing?

Accepted Answer

The auditory ossicles (malleus, incus, and stapes) transmit vibrations from the eardrum to the inner ear, where sound is processed. In an ear infection, the build-up of fluid and pus can hinder the movement of the ossicles, preventing them from transmitting sound effectively and resulting in hearing loss.

Question 3

Your five-year-old daughter's teacher says that your child has been having problems seeing the whiteboard in the classroom.The doctor checks and diagnoses her with myopia.Does this problem have to do with a cloudiness of the lens,pressure problems,or the length of the eyeball? Pick one of the choices,explain the problem,and describe the treatment.

Accepted Answer

The answer of Your five-year-old daughter's teacher says that your...

Question 4

________ deafness results from conditions in the middle ear that block the normal transfer of vibrations from the tympanic membrane to the oval window.

Accepted Answer

Conduction deafness occurs when there is a problem with the conduction of sound waves from the outer ear to the inner ear. This can be caused by conditions in the middle ear such as a build-up of wax, fluid, or a damaged ossicle (small bone).

Question 5

Receptors in the ________ provide sensations of gravity and linear acceleration.

Accepted Answer

The receptors for gravity and linear acceleration are located in the vestibule of the inner ear.

Question 6

You notice that your father holds his book farther from his face than he used to.Since you are taking an anatomy and physiology course,you realize that this is due to

Accepted Answer

As we age, the lens loses some of its flexibility and becomes less able to accommodate for close vision. This is known as presbyopia and is a common age-related vision change. Holding reading material farther away is a compensatory mechanism used to improve focus. This is a normal part of aging and not necessarily a sign of a pathology like cataracts or a tumor.

Question 7

What do the receptors for hearing,static equilibrium,and dynamic equilibrium all have in common?

Accepted Answer

The receptors for hearing, static equilibrium, and dynamic equilibrium all have stereocilia, which are similar hairlike projections that respond to movement or vibration.

Question 8

Sound energy is converted into mechanical movements by the

Accepted Answer

Sound energy is first collected by the outer ear and directed to the tympanic membrane, which then vibrates in response to the sound waves. These vibrations are then transmitted to the middle ear, where they are amplified and directed toward the oval window. The auditory ossicles play a crucial role in this amplification process, but they do not directly convert sound energy into mechanical movements. The cochlea and round window are both part of the inner ear and are involved in the final step of sound processing, which involves the conversion of mechanical movements into neural signals that can be interpreted by the brain. Therefore, the best answer is E - the tympanic membrane converts sound energy into mechanical movements that are then transmitted to the middle ear.

Question 9

The tympanic membrane vibrates to frequencies between

Accepted Answer

The tympanic membrane, or eardrum, vibrates in response to sound waves, and the human ear is generally capable of hearing frequencies between 20 Hz and 20,000 Hz. This range represents the limits of human hearing, from the lowest bass sounds to the highest frequencies that can be detected.

Question 10

Your grandmother who lives in an assisted living facility is always complaining about how bad the food is.You eat there with her often and find the food to be cooked well and interesting,even though the food is not what you would really prefer.What is the most reasonable explanation for this?

Accepted Answer

As people age, they tend to have a reduction in the number of taste buds and taste bud receptors, which can affect their ability to taste different flavors. This may be the reason why the grandmother is not enjoying the food despite it being cooked well and interesting.

Question 11

Movement of the sensory receptors in the ampullae of the semicircular canals

Accepted Answer

Movement of the sensory receptors in the ampullae of the semicircular canals stimulates the receptor cells, alerting us to rotational movement. This helps us maintain our balance and equilibrium.

Question 12

The frequency of a sound is indicated to the nervous system by the

Accepted Answer

The region of the basilar membrane that is stimulated corresponds to the frequency of the sound wave. Different regions of the basilar membrane vibrate maximally in response to different frequencies of sound. This pattern of vibration is detected by hair cells in the spiral organ, providing information about the frequency of the sound.

Question 13

The structure that separates the cochlear duct from the scala tympani is the

Accepted Answer

The basilar membrane separates the cochlear duct (scala media) from the scala tympani in the cochlea. It plays a crucial role in the mechanics of hearing by supporting the organ of Corti, where sound vibrations are converted into neural signals.

Question 14

Tom recently had surgery to remove some polyps (growths)from his sinuses.After he heals from the surgery,he notices that his sense of smell is not as keen as it was prior to the procedure.What is the reason for this side effect?

Accepted Answer

The answer of Tom recently had surgery to remove some...

Question 15

The movement of the stapes at the oval window establishes pressure waves in the

Accepted Answer

The oval window separates the middle ear from the inner ear and when the stapes bone moves, it causes the oval window to vibrate, creating pressure waves in the fluids of the inner ear. The perilymph of the scala vestibuli, located next to the oval window, is the fluid that receives these pressure waves. The other options are not directly involved in receiving pressure waves from the movement of the stapes at the oval window.

Question 16

The structure that overlies the spiral organ,and which is firmly attached to the walls of the cochlear duct,is the

Accepted Answer

The structure that overlies the spiral organ and is firmly attached to the walls of the cochlear duct is the tectorial membrane.

Question 17

The branch of the cranial nerve that is responsible for monitoring changes in equilibrium is the ________ branch.

Accepted Answer

The vestibular branch of the cranial nerve (specifically, the vestibulocochlear nerve, also known as the eighth cranial nerve) is responsible for monitoring changes in equilibrium or balance. The otoconial branch does not exist, while the cochlear and auditory branches are responsible for hearing. The trigeminal nerve is responsible for sensation in the face and control of the muscles used in chewing, but not for monitoring changes in equilibrium.

Question 18

The sense of hearing is provided by receptors of the

Accepted Answer

The internal ear contains the structures responsible for hearing, including the cochlea and the auditory nerve. The outer ear (including the pinna) and middle ear help to collect and transmit sound to the inner ear. The semicircular canals are part of the vestibular system, which helps with balance and spatial orientation.

Quiz 9: The General and Special Senses