Anatomy And Physiology Of The Sensory Organs Quiz

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Anatomy And Physiology Of The Sensory Organs Quiz - Quiz


Sensory organs are the medium through which we feel and see the world. This quiz on the sensory organs' anatomy, and physiology, will ensure you become familiar with the functionality of these organs. The quiz contains various facts and trivia. The quiz is loaded with questions on all sensory organs and has difficulty levels ranging from easy and medium to hard. If you like the quiz, share it with your friends and family. All the best!
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Questions and Answers
  • 1. 

    Olfaction means

    • A.

      Taste

    • B.

      Vision

    • C.

      Smell

    • D.

      Hearing

    Correct Answer
    C. Smell
    Explanation
    Olfaction refers to the sense of smell. It is the ability to detect and perceive different odors and scents in the environment. Unlike taste, which is the sense of detecting flavors through the taste buds, olfaction specifically pertains to the sense of smell. Vision and hearing are unrelated to olfaction.

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  • 2. 

    Gustation means

    • A.

      Smell

    • B.

      Taste

    • C.

      Vision

    • D.

      Hearing

    Correct Answer
    B. Taste
    Explanation
    Gustation refers to the sense of taste. It is the ability to perceive and differentiate between different flavors and tastes. This sensory experience is primarily detected by the taste buds on the tongue, which can identify sweet, sour, salty, bitter, and umami (savory) tastes. Therefore, the correct answer is "taste."

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  • 3. 

    Acuity means

    • A.

      Ability to bend light rays as they pass from one medium to another

    • B.

      Clearness or sharpness of a sensory function

    • C.

      Substance that does not allow the passage of light; not transparent

    • D.

      None of the above

    Correct Answer
    B. Clearness or sharpness of a sensory function
    Explanation
    Acuity refers to the clearness or sharpness of a sensory function. It is a measure of how well a person can perceive or discriminate between different stimuli using their senses, such as vision or hearing. Acuity is often used to describe visual acuity, which measures the sharpness of vision, but it can also refer to other sensory functions like auditory acuity or tactile acuity.

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  • 4. 

    Accommodation

    • A.

      Clearness or sharpness of a sensory function

    • B.

      Adjustment of the eye for various distances so that images fall on the retina of they eye

    • C.

      Fluid that very closely resembles spinal fluid but found in teh cochlea

    • D.

      Functionality of a sensory organ

    Correct Answer
    B. Adjustment of the eye for various distances so that images fall on the retina of they eye
    Explanation
    The correct answer is "adjustment of the eye for various distances so that images fall on the retina of the eye." Accommodation refers to the ability of the eye to adjust its focus to see objects clearly at different distances. This is achieved by changing the shape of the lens in the eye, allowing the incoming light to be properly focused on the retina. This process is essential for clear vision and is controlled by the ciliary muscles in the eye.

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  • 5. 

    Perilymph

    • A.

      Layer or coat of tissue; also called membrane layer

    • B.

      Light-senstive pigment in the retinal cones and rods that absorbs light and initiates the visual proess: also called visual pigment

    • C.

      Fluid that closely resembles spinal fluid but found in the cochlea

    • D.

      Color sensitive pigment in the retinal cones

    Correct Answer
    C. Fluid that closely resembles spinal fluid but found in the cochlea
    Explanation
    The correct answer is "fluid that closely resembles spinal fluid but found in the cochlea". This is because perilymph is a fluid that fills the scala vestibuli and scala tympani, which are two chambers within the cochlea of the inner ear. This fluid is similar in composition to cerebrospinal fluid, which is found in the spinal cord and brain. It helps transmit sound vibrations to the sensory cells in the cochlea, allowing for the perception of sound.

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  • 6. 

    Articulating

    • A.

      Being loosely joined or connected together to allow motion between the parts

    • B.

      Layer or coat of tissue:

    • C.

      Clearness or sharpness of a sensory function

    • D.

      Functionality of a sensory organ

    Correct Answer
    A. Being loosely joined or connected together to allow motion between the parts
    Explanation
    The correct answer is "being loosely joined or connected together to allow motion between the parts." This means that the parts are not tightly connected and can move independently of each other. This could refer to joints in the body that allow for flexibility and movement, or it could describe a mechanical system where the parts are designed to move freely.

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  • 7. 

    Rods

    • A.

      Function in dim light and produce black and white vision

    • B.

      Function in bright light and produce color vision

    • C.

      Highly sensitive structure

    • D.

      Highly resistive structure

    Correct Answer
    A. Function in dim light and produce black and white vision
    Explanation
    Rods are photoreceptor cells in the retina of the eye that are responsible for vision in low light conditions. They are highly sensitive to light and are able to function in dim light, allowing us to see in black and white. This is in contrast to cones, another type of photoreceptor cell, which are responsible for color vision and function in bright light conditions. Therefore, the correct answer is that rods function in dim light and produce black and white vision.

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  • 8. 

    Cones

    • A.

      Function in dim light

    • B.

      Also called optic disc

    • C.

      Function in bright light

    • D.

      Upper ear lobe

    Correct Answer
    C. Function in bright light
    Explanation
    The given answer "function in bright light" is the correct answer because cones are photoreceptor cells in the retina of the eye that are responsible for color vision and visual acuity. Cones are most active in bright light conditions, allowing us to see fine details and perceive colors accurately. In dim light, the function of cones decreases, and the rod cells take over to provide us with better vision in low light conditions.

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  • 9. 

    Macula

    • A.

      A highly sensitive structure in the central portion of the retina

    • B.

      Lines the inner surface of the eyelids

    • C.

      The second major humor of the eye

    • D.

      None of the above

    Correct Answer
    A. A highly sensitive structure in the central portion of the retina
    Explanation
    The macula is a highly sensitive structure in the central portion of the retina. It is responsible for central vision, allowing us to see fine details and perform tasks such as reading and recognizing faces. The macula contains a high concentration of photoreceptor cells called cones, which are responsible for color vision and visual acuity. Damage or degeneration of the macula can lead to conditions such as age-related macular degeneration (AMD), which can result in central vision loss.

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  • 10. 

    Humor

    • A.

      When something is funny

    • B.

      Fluid of the eye

    • C.

      Upper bone in arm

    • D.

      None of the above

    Correct Answer
    B. Fluid of the eye
    Explanation
    The correct answer is "fluid of the eye" because humor refers to the watery substance that fills the chambers of the eye, maintaining its shape and providing nutrients to the surrounding tissues. It is also known as aqueous humor and plays a crucial role in maintaining healthy vision.

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  • 11. 

    Tympanic membrane

    • A.

      Also called tympanum or eardrum

    • B.

      Connects the middele ear to the pharynx

    • C.

      Contains tiny nerve endings

    • D.

      None of the above

    Correct Answer
    A. Also called tympanum or eardrum
    Explanation
    The correct answer is "also called tympanum or eardrum." The tympanic membrane is a thin, delicate membrane that separates the outer ear from the middle ear. It is commonly referred to as the eardrum or tympanum. This membrane plays a crucial role in transmitting sound vibrations from the outer ear to the middle ear, where they are further amplified and transmitted to the inner ear for processing.

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  • 12. 

    Oval window

    • A.

      Connects the middle ear to the pharynx

    • B.

      A membrane-covered opening on the external sufrace of the cochlea

    • C.

      Equalizes pressure on the outer and inner surface of the eardrum

    • D.

      Femur, ulna, patella

    Correct Answer
    B. A membrane-covered opening on the external sufrace of the cochlea
    Explanation
    The correct answer is "a membrane-covered opening on the external surface of the cochlea". The oval window is a small, membrane-covered opening that connects the middle ear to the cochlea, which is a part of the inner ear. It is located at the base of the cochlea and is responsible for transmitting sound vibrations from the middle ear to the fluid-filled inner ear. The oval window plays a crucial role in the process of hearing by allowing sound waves to enter the cochlea and stimulating the hair cells that convert sound into electrical signals for the brain to interpret.

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  • 13. 

    Three smallest bones of the body.

    • A.

      Patella, ulna, phalanges

    • B.

      Femur, humerus, radius

    • C.

      Malleus, incus, stapes

    • D.

      Patella, femur, stapes

    Correct Answer
    C. Malleus, incus, stapes
    Explanation
    The correct answer is malleus, incus, stapes. These three bones are located in the middle ear and are collectively known as the ossicles. The malleus, incus, and stapes work together to transmit sound vibrations from the eardrum to the inner ear. They are the smallest bones in the human body and play a crucial role in the process of hearing.

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  • 14. 

    Eustachian tube.

    • A.

      A snail-shaped structure filled with fluid

    • B.

      Connects the middle ear to the pharynx

    • C.

      Collects waves traveling through the air

    • D.

      None of the above

    Correct Answer
    B. Connects the middle ear to the pharynx
    Explanation
    The Eustachian tube is a passage that connects the middle ear to the pharynx. It allows for equalization of pressure between the middle ear and the atmosphere, helping to maintain proper function of the ear. This tube plays a crucial role in regulating pressure and preventing fluid buildup in the middle ear.

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  • 15. 

    Cochlea

    • A.

      Structure in the middle ear

    • B.

      A slender tube lined with glands that produce a waxy secretion

    • C.

      The first structure of the inner ear, a snail-shped structure filled with fluid

    • D.

      None of the above

    Correct Answer
    C. The first structure of the inner ear, a snail-shped structure filled with fluid
    Explanation
    The cochlea is the first structure of the inner ear and is responsible for converting sound vibrations into electrical signals that can be interpreted by the brain. It is shaped like a snail and is filled with fluid. The other options mentioned in the question, such as being a structure in the middle ear or a tube lined with glands, are incorrect.

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  • 16. 

    Cerumen

    • A.

      A waxy secretion

    • B.

      Fluid

    • C.

      Cell membrane

    • D.

      Lipid

    Correct Answer
    A. A waxy secretion
    Explanation
    Cerumen is a waxy secretion produced by the ceruminous glands in the ear canal. It serves as a protective barrier, trapping dust, debris, and bacteria, preventing them from reaching the delicate structures of the ear. The waxy nature of cerumen helps to lubricate the ear canal and keep the skin inside the ear moist. It also plays a role in cleaning and self-cleansing of the ear canal by slowly moving outwards, carrying trapped particles with it.

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  • 17. 

    The second major humor of the eye is:

    • A.

      Vitreous chamber

    • B.

      Vitreous humor

    • C.

      Glaucoma

    • D.

      None of the above

    Correct Answer
    B. Vitreous humor
    Explanation
    The correct answer is "vitreous humor." The vitreous humor is a gel-like substance that fills the vitreous chamber of the eye, which is located between the lens and the retina. It helps maintain the shape of the eye and provides support to the delicate structures within the eye. It also helps transmit light to the retina, allowing for clear vision. Glaucoma, on the other hand, is a condition characterized by increased pressure within the eye, which can lead to vision loss if left untreated. Therefore, glaucoma is not the correct answer in this context.

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  • 18. 

    Tinnitus

    • A.

      Opacity that forms on the lens and impairs vision

    • B.

      Perception of ringing in the ears with no external stimuli

    • C.

      Complete deafness

    • D.

      None of the above

    Correct Answer
    B. Perception of ringing in the ears with no external stimuli
    Explanation
    Tinnitus refers to the perception of ringing in the ears without any external stimuli. It is a condition where individuals experience a persistent sound or noise in their ears, such as ringing, buzzing, or hissing, even when there is no actual sound present. This perception can be constant or intermittent and can vary in intensity. Tinnitus is often a symptom of an underlying condition, such as hearing loss, exposure to loud noises, or certain medical conditions. It can significantly affect a person's quality of life and may require medical intervention or management strategies to alleviate the symptoms.

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  • 19. 

    Visual field

    • A.

      Area in which objects are seen when the eye is in a fixed postion

    • B.

      Outward deviation of the eye

    • C.

      Lazy eye syndrome

    • D.

      None of the above

    Correct Answer
    A. Area in which objects are seen when the eye is in a fixed postion
    Explanation
    The visual field refers to the area in which objects can be seen when the eye is in a fixed position. It represents the range of vision that an individual has without moving their eyes. This includes both the central vision, which is focused directly in front of the eye, as well as the peripheral vision, which extends to the sides. The visual field is important for tasks such as reading, driving, and navigating the environment.

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  • 20. 

    Chalazion

    • A.

      Measurement of refractive errors

    • B.

      Abnormal overflow of tears

    • C.

      Tumor of the eyelid

    • D.

      Liquid discharge from the eye

    Correct Answer
    C. Tumor of the eyelid
    Explanation
    A chalazion is a tumor of the eyelid. It is a small, painless lump that forms due to the blockage of an oil gland in the eyelid. It is not cancerous and usually resolves on its own over time. Treatment options include warm compresses and eyelid massage to help unclog the gland, as well as medications or surgical removal in some cases.

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  • 21. 

    Cataract

    • A.

      Opacity that froms on the lens and impairs vision

    • B.

      Removal of the eye

    • C.

      Tumor of the eyelid

    • D.

      Red eye syndrome

    Correct Answer
    A. Opacity that froms on the lens and impairs vision
    Explanation
    Cataract is an opacity that forms on the lens of the eye, leading to impaired vision. This condition causes the lens to become cloudy, resulting in blurry or hazy vision. It is a common age-related condition, but can also be caused by factors such as injury, certain medications, or underlying health conditions. The only effective treatment for cataracts is surgical removal of the cloudy lens and replacement with an artificial lens. This procedure helps to restore clear vision and improve the quality of life for individuals with cataracts.

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  • 22. 

    Strabismus

    • A.

      Abnormal overflow of tears

    • B.

      Lazy eye

    • C.

      A condition in which one eye is misaligned with the other eye; also called heterotropia

    Correct Answer
    C. A condition in which one eye is misaligned with the other eye; also called heterotropia
    Explanation
    Strabismus is a condition where one eye is misaligned with the other eye, also known as heterotropia. This means that the eyes do not line up properly and point in different directions. It can result in a lazy eye, which is when one eye does not develop normal vision. However, abnormal overflow of tears is not a characteristic of strabismus.

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  • 23. 

    Vertigo

    • A.

      Feeling of dizziness or spinning

    • B.

      Disorder of the labyrinth that leads to progressive hearing loss

    • C.

      Infection of the external auditory canal

    Correct Answer
    A. Feeling of dizziness or spinning
    Explanation
    Vertigo is a condition characterized by a feeling of dizziness or spinning. It is often caused by problems in the inner ear, such as the displacement of calcium crystals or inflammation. This can disrupt the normal balance signals sent to the brain, leading to a sensation of movement even when the person is stationary. Vertigo can be triggered by various factors, including head injuries, certain medications, and inner ear infections. The symptoms of vertigo may include nausea, vomiting, and difficulty with balance and coordination. Treatment options for vertigo include medication, physical therapy, and lifestyle changes.

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  • 24. 

    Amblyopia

    • A.

      Complete color blindness

    • B.

      Lazy eye syndrome

    • C.

      Complete deafness

    Correct Answer
    B. Lazy eye syndrome
    Explanation
    Amblyopia, also known as lazy eye syndrome, is a condition where there is a decrease in vision in one eye due to the eye and brain not working together properly. It is not a complete loss of vision, but rather a reduced vision in one eye. This condition typically develops during childhood and if left untreated, can lead to permanent vision impairment. Therefore, lazy eye syndrome is the most appropriate explanation for the given answer.

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  • 25. 

    Achromatopsia

    • A.

      Complete color blindness

    • B.

      Complete deafness

    • C.

      Tumor of the eyelid

    • D.

      Partial color blindness

    Correct Answer
    A. Complete color blindness
    Explanation
    Achromatopsia refers to a condition of complete color blindness, where individuals are unable to perceive any colors at all. This means that they see the world in shades of gray. This condition is caused by a genetic mutation that affects the cones in the eyes, which are responsible for color vision. As a result, people with achromatopsia have difficulty distinguishing between different colors and rely heavily on other visual cues, such as contrast and brightness, to navigate their surroundings.

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  • 26. 

    Retinoblastoma

    • A.

      Feeling of dizziness or spinning

    • B.

      Measurement of refractive errors

    • C.

      Neoplastic disease of the eye found primarily in children

    • D.

      None of the above

    Correct Answer
    C. Neoplastic disease of the eye found primarily in children
    Explanation
    Retinoblastoma is a neoplastic disease of the eye that is primarily found in children. It is a type of cancer that affects the retina, the light-sensitive tissue at the back of the eye. Symptoms of retinoblastoma can include a feeling of dizziness or spinning, but this is not the main characteristic of the disease. Measurement of refractive errors refers to the assessment of vision problems such as nearsightedness or farsightedness, which is not related to retinoblastoma. Therefore, the correct answer is that retinoblastoma is a neoplastic disease of the eye primarily found in children.

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  • 27. 

    Enucleation

    • A.

      Removal of the eye

    • B.

      Tumor of the eye

    • C.

      Outward deviation of the eye

    • D.

      Elongation of the eye

    Correct Answer
    A. Removal of the eye
    Explanation
    Enucleation refers to the surgical removal of the eye. This procedure is typically performed when the eye is damaged beyond repair or in cases of severe eye diseases or tumors. The term "removal of the eye" accurately describes the process of enucleation, making it the correct answer in this context. The other options, such as tumor of the eye, outward deviation of the eye, and elongation of the eye, do not accurately represent the meaning of enucleation.

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  • 28. 

    Otitis externa

    • A.

      Refers to the wet form of macular degeneration

    • B.

      Infection of the external auditory canal

    • C.

      Inability to see well in dim light

    • D.

      None of the above

    Correct Answer
    B. Infection of the external auditory canal
    Explanation
    Otitis externa refers to an infection of the external auditory canal. It is not related to macular degeneration or the inability to see well in dim light.

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  • 29. 

    Nyctalopia

    • A.

      Inability to see well in dim light

    • B.

      Fear of darkness

    • C.

      Normal vision

    • D.

      Inability to see in bright light

    Correct Answer
    A. Inability to see well in dim light
    Explanation
    Nyctalopia refers to the inability to see well in dim light. This condition is commonly known as night blindness, where individuals have difficulty seeing in low-light conditions. It is caused by a deficiency in vitamin A or a genetic disorder that affects the functioning of the retina. People with nyctalopia may experience reduced visual acuity, decreased peripheral vision, and increased sensitivity to glare in low-light environments. This condition can significantly impact a person's ability to navigate and perform tasks in low-light settings.

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  • 30. 

    Meniere disease

    • A.

      Disoder that leads to loss of vision

    • B.

      Disease of the menengies

    • C.

      Disorder of the labyrinth that leads to progressive hearing loss

    • D.

      None of the above

    Correct Answer
    C. Disorder of the labyrinth that leads to progressive hearing loss
    Explanation
    Meniere's disease is a disorder of the labyrinth, which is a part of the inner ear responsible for balance and hearing. It is characterized by episodes of vertigo (a spinning sensation), tinnitus (ringing in the ears), a feeling of fullness or pressure in the affected ear, and progressive hearing loss. This condition is not related to loss of vision or a disease of the meninges, which are the protective membranes surrounding the brain and spinal cord.

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  • 31. 

    Anacusis

    • A.

      Color blindness

    • B.

      Total deafness

    • C.

      Total blindness

    • D.

      None of the above

    Correct Answer
    B. Total deafness
    Explanation
    Total deafness refers to the complete loss of hearing in both ears. This means that a person with total deafness is unable to perceive any sounds or vibrations. Anacusis, on the other hand, refers to the complete absence of hearing in one or both ears. Color blindness and total blindness are unrelated to the sense of hearing and do not involve any loss of hearing ability. Therefore, the correct answer is total deafness.

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  • 32. 

    Otitis media

    • A.

      Abnoramal hardening

    • B.

      An inflammation of the middle ear

    • C.

      Ringing sound in the ear

    • D.

      None of the above

    Correct Answer
    B. An inflammation of the middle ear
    Explanation
    Otitis media refers to an inflammation of the middle ear. This condition occurs when the middle ear becomes infected, usually due to bacteria or viruses. Symptoms of otitis media can include ear pain, fluid buildup, and sometimes a ringing sound in the ear. Abnormal hardening and "none of the above" are not accurate descriptions of otitis media.

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  • 33. 

    Otopyorrhea

    • A.

      Drainage from the eyes

    • B.

      Pus drainage from the ear

    • C.

      Common cold

    • D.

      Nose infection

    Correct Answer
    B. Pus drainage from the ear
    Explanation
    Otopyorrhea refers to the condition where there is pus drainage from the ear. This condition typically occurs due to an infection in the middle ear, which can result in the accumulation of fluid and subsequent formation of pus. Symptoms of otopyorrhea may include ear pain, hearing loss, and a discharge of pus from the ear. It is important to seek medical attention for proper diagnosis and treatment of otopyorrhea.

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  • 34. 

    Otoencephalitis

    • A.

      A disorder characterized by an abnromal hardening of bones of the middle ear

    • B.

      Inflammation of brain tissue near the middle ear

    • C.

      An incision of the eardrum

    • D.

      Tooth infection

    Correct Answer
    B. Inflammation of brain tissue near the middle ear
    Explanation
    Otoencephalitis is a disorder characterized by inflammation of the brain tissue near the middle ear. This condition can occur as a result of an infection that spreads from the middle ear to the surrounding brain tissue. It can cause symptoms such as fever, headache, ear pain, and neurological deficits. Prompt treatment with antibiotics is necessary to prevent further complications and damage to the brain.

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  • 35. 

    Macular degeneration

    • A.

      A deterioration of the macula, the most sensitive portion of teh retina

    • B.

      Loss of stereopsis

    • C.

      Infection of the nose and throat

    • D.

      None of the above

    Correct Answer
    A. A deterioration of the macula, the most sensitive portion of teh retina
    Explanation
    Macular degeneration refers to the deterioration of the macula, which is the most sensitive part of the retina. The macula is responsible for sharp, central vision, allowing us to see fine details clearly. As it deteriorates, it can lead to a loss of central vision, making it difficult to read, drive, or recognize faces. This condition is commonly associated with aging and is a leading cause of vision loss in older adults. The other options, such as loss of stereopsis or infection of the nose and throat, are unrelated to macular degeneration.

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  • Dec 28, 2023
    Quiz Edited by
    ProProfs Editorial Team
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