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Questions and Answers
What is the name of the condition in which the lens of the eye loses its elasticity and cannot accommodate for near vision?
What is the name of the condition in which the lens of the eye loses its elasticity and cannot accommodate for near vision?
Glaucoma is characterized by a buildup of pressure in the eye that can damage the optic nerve.
Glaucoma is characterized by a buildup of pressure in the eye that can damage the optic nerve.
True (A)
What is the medical term for earwax?
What is the medical term for earwax?
Cerumen
The _______ is a fluid-filled chamber in the inner ear that plays a crucial role in hearing.
The _______ is a fluid-filled chamber in the inner ear that plays a crucial role in hearing.
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Match the following terms related to vision and hearing with their definitions:
Match the following terms related to vision and hearing with their definitions:
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Which of the following is NOT a correction for myopia?
Which of the following is NOT a correction for myopia?
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Astigmatism is caused by an uneven curvature of the cornea or the lens.
Astigmatism is caused by an uneven curvature of the cornea or the lens.
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What is the condition called when a person has difficulty focusing on near objects due to aging?
What is the condition called when a person has difficulty focusing on near objects due to aging?
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The term for "crossed eyes" is ______.
The term for "crossed eyes" is ______.
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Match the following eye conditions with their descriptions:
Match the following eye conditions with their descriptions:
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Which of the following is NOT a common cause of conductive hearing loss?
Which of the following is NOT a common cause of conductive hearing loss?
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Otitis externa, commonly known as swimmer's ear, is an inflammation of the middle ear.
Otitis externa, commonly known as swimmer's ear, is an inflammation of the middle ear.
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What is the name of the condition characterized by an abnormal patency of the Eustachian tube, leading to fluid movement from the nasopharynx into the middle ear?
What is the name of the condition characterized by an abnormal patency of the Eustachian tube, leading to fluid movement from the nasopharynx into the middle ear?
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Barotrauma is an injury caused by the inability of the ear to equalize ______ stress.
Barotrauma is an injury caused by the inability of the ear to equalize ______ stress.
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The ______ conjunctiva lines the eyelids.
The ______ conjunctiva lines the eyelids.
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Match the following middle ear disorders with their descriptions:
Match the following middle ear disorders with their descriptions:
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Bacterial conjunctivitis is not contagious.
Bacterial conjunctivitis is not contagious.
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Which of the following is NOT a cause of conjunctivitis?
Which of the following is NOT a cause of conjunctivitis?
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Match the type of conjunctivitis with its typical characteristics.
Match the type of conjunctivitis with its typical characteristics.
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What is the medical term for "pink eye"?
What is the medical term for "pink eye"?
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The bulbar conjunctiva covers the cornea.
The bulbar conjunctiva covers the cornea.
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What is the main protein component of the lens that can clump together causing a cataract?
What is the main protein component of the lens that can clump together causing a cataract?
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What is the main way a cataract affects vision?
What is the main way a cataract affects vision?
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Conductive hearing loss is always permanent.
Conductive hearing loss is always permanent.
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Which of the following is NOT a type of taste disorder?
Which of the following is NOT a type of taste disorder?
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The medical term for a decrease in taste sensation is ______.
The medical term for a decrease in taste sensation is ______.
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Match the following terms related to alterations in smell with their definitions.
Match the following terms related to alterations in smell with their definitions.
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Explain the relationship between the sense of smell and the sense of taste.
Explain the relationship between the sense of smell and the sense of taste.
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Flashcards
Myopia
Myopia
Nearsightedness; image focused in front of retina.
Hyperopia
Hyperopia
Farsightedness; image focused behind the retina.
Astigmatism
Astigmatism
Irregular lens curvature causing blurred vision.
Presbyopia
Presbyopia
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Strabismus
Strabismus
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Amblyopia
Amblyopia
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Diplopia
Diplopia
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Nystagmus
Nystagmus
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Conjunctiva
Conjunctiva
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Correction for Myopia
Correction for Myopia
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Palpebral conjunctiva
Palpebral conjunctiva
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Bulbar conjunctiva
Bulbar conjunctiva
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Conjunctival sac
Conjunctival sac
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Conjunctivitis
Conjunctivitis
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Viral conjunctivitis
Viral conjunctivitis
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Bacterial conjunctivitis
Bacterial conjunctivitis
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Allergic conjunctivitis
Allergic conjunctivitis
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Cataract
Cataract
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Altered Somatic Function
Altered Somatic Function
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Special Sensory Function
Special Sensory Function
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Alterations in Vision
Alterations in Vision
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Alterations in Hearing
Alterations in Hearing
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Balance Disorders
Balance Disorders
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Conductive hearing loss
Conductive hearing loss
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Sensorineural hearing loss
Sensorineural hearing loss
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Mixed hearing loss
Mixed hearing loss
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Hyposmia
Hyposmia
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Ageusia
Ageusia
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Obstruction in Ear Canal
Obstruction in Ear Canal
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Otitis externa
Otitis externa
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Eustachian Tube Dysfunction
Eustachian Tube Dysfunction
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Barotrauma
Barotrauma
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Otitis media
Otitis media
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Mastoiditis
Mastoiditis
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Tinnitus
Tinnitus
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Ménière Disease
Ménière Disease
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Study Notes
Applied Pathophysiology: A Conceptual Approach to the Mechanisms of Disease
- This lecture series covers applied pathophysiology, a conceptual approach to the mechanisms of disease.
- The modules and chapters cover various topics related to disease.
- The author is Dr. Romeo Batacan Jr.
- The lecture series is part of the MPAT12001 Medical Pathophysiology Lecture Series.
Alterations in Visual Function: Errors in Refraction
- Myopia (nearsightedness):
- Eye focuses image in front of retina.
- Correction: biconcave lens to diverge light.
- Hyperopia (farsightedness):
- Eye focuses image behind retina.
- Correction: biconvex lens to converge light.
- Astigmatism:
- Irregular curvature of lens.
- Prevents image focusing, causing blurry vision.
- Caused by corneal scar or scattering of crystalline lens.
- Correction: glasses, contact lenses, or surgery.
- Presbyopia:
- Age-related farsightedness.
- Ciliary muscle and lens lose ability to accommodate for near vision.
- Correction: bifocals.
Alterations in Visual Function: Alterations in Eye Movement
- Strabismus ("crossed eyes"):
- Misalignment of visual axes.
- Inability to focus on single object.
- Lack of coordinated extraocular muscle function for alignment.
- Amblyopia ("lazy eye"):
- Loss of visual detail from uncoordinated eye movement and focus.
- Visual axes misalignment in children.
- Avoidance of diplopia (double vision) by the brain suppressing one image.
- Visual impairment of ignored eye can range from dimness to permanent loss.
- Diplopia:
- Perception of two images of a single object.
- Images fall on non-corresponding areas of retina.
- May result from strabismus.
- Lack of extraocular muscle coordination.
Alterations in Visual Function: Alterations in Protective Structures
- Conjunctiva: a transparent mucous membrane that produces lubricating mucous secretions.
- Palpebral conjunctiva: lines eyelids.
- Bulbar conjunctiva: covers white of eyes.
- Conjunctivitis (“pink eye”):
- Inflammation of the mucous membrane lining the eye.
- Causes include viral, bacterial, and allergic factors.
- Cataract:
- Clouding of the lens.
- Altering vision focus by scattering incoming light.
- Protein component of lens (crystallin) clumps or aggregates.
- Increasing opaque area leads to vision impairment.
Alterations in Hearing and Balance
-
Conductive hearing loss:
- Obstruction (e.g., cerumen).
- Trauma.
- Inflammation (e.g., otitis externa).
-
Otitis media:
- Inflammation of the middle ear.
- Common cause of hearing loss in children
- Myringotomy may be a treatment to relieve pressure
-
Mastoiditis:
- Bacterial infection in middle ear air cells.
- Often a complication of otitis media.
-
Otosclerosis:
- Autosomal-dominant condition causing progressive conductive hearing loss.
- Slow bone formation at oval window.
-
Sensorineural hearing loss: inner ear dysfunction.
- Cochlear hair cell damage (often irreversible).
- Neural pathway damage (auditory nerve).
- Factors include aging, trauma, tumors, infections, ototoxic drugs.
-
Tinnitus (inner ear):
- Perception of ear or head noise.
- Not caused by external stimuli.
-
Ménière disease:
- Severe vertigo with sensorineural hearing loss and tinnitus due to inner ear endolymph imbalance.
Chemical Senses
- Smell (Olfaction) and Taste (Gustation):
- Chemoreceptors detect chemical dissolved in solution
- Smell: airborne chemicals; Taste: food chemicals.
- Smell and taste strongly linked. If one is impaired, the other may be as well.
- Chemoreceptors detect chemical dissolved in solution
- Taste Disorders: Not common.
- Hypogeusia: reduced taste perception.
- Ageusia: absence of taste perception.
- Parageusia: distorted taste perception.
- Smell Disorders: Few occur early in life
- Hyposmia: weakened sense of smell.
- Anosmia: inability to smell.
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Description
This quiz explores alterations in visual function related to applied pathophysiology as outlined in the MPAT12001 Medical Pathophysiology Lecture Series. It covers specific conditions such as myopia, hyperopia, astigmatism, and presbyopia, detailing their mechanisms and corrections. Designed for medical students and professionals, it enhances understanding of how diseases affect vision.