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Questions and Answers
Questions and Answers
What is the innermost layer of the eye?
What is the innermost layer of the eye?
Retina
The five basic tastes are sweet, salty, sour, bitter, and ____________________.
The five basic tastes are sweet, salty, sour, bitter, and ____________________.
Umami
What do you call a person who sings off key?
What do you call a person who sings off key?
Amusia
Ceruminous glands secrete cerumen, also known as ______________________...catches bacteria and foreign things entering the ear.
Ceruminous glands secrete cerumen, also known as ______________________...catches bacteria and foreign things entering the ear.
The common cold is the most frequent cause of _________________ .
The common cold is the most frequent cause of _________________ .
Irregular curvature of the cochlea causes astigmatism.
Irregular curvature of the cochlea causes astigmatism.
Color blindness is more common in women than in men.
Color blindness is more common in women than in men.
Besides being able to hear, the ears also help to maintain balance.
Besides being able to hear, the ears also help to maintain balance.
Dizziness is the main culprit for the ringing sound of tinnitus.
Dizziness is the main culprit for the ringing sound of tinnitus.
The human mouth contains about 10,000 sensory receptors for taste.
The human mouth contains about 10,000 sensory receptors for taste.
What are the fluids named that fill the eyeball?
What are the fluids named that fill the eyeball?
What percentage of our sense of taste actually results from what we smell?
What percentage of our sense of taste actually results from what we smell?
The Eustachian tube equalizes pressure on either side of the_____________________?
The Eustachian tube equalizes pressure on either side of the_____________________?
What is the clinical name for an inner ear infection?
What is the clinical name for an inner ear infection?
In salmon, which sense accounts for their ability to return to home rivers?
In salmon, which sense accounts for their ability to return to home rivers?
What is a short, tubelike structure that connects the outer ear to the eardrum?
What is a short, tubelike structure that connects the outer ear to the eardrum?
What is the chamber in the inner ear that contains the three semicircular canals?
What is the chamber in the inner ear that contains the three semicircular canals?
What triggers a reaction to irritation of the nasal membranes, producing nasal congestion and drainage?
What triggers a reaction to irritation of the nasal membranes, producing nasal congestion and drainage?
What are the tiny bumps on the tongue that house taste buds called?
What are the tiny bumps on the tongue that house taste buds called?
What are the tear secretors located above the lateral end of each eye called?
What are the tear secretors located above the lateral end of each eye called?
What is a dime-size area at the top of each nasal cavity that houses sensors responsible for smell?
What is a dime-size area at the top of each nasal cavity that houses sensors responsible for smell?
What is the sensory pathway from the nasal cavity to the olfactory cortex of the brain called?
What is the sensory pathway from the nasal cavity to the olfactory cortex of the brain called?
What sensory cells in the retina are sensitive to bright light and provide color vision?
What sensory cells in the retina are sensitive to bright light and provide color vision?
What transmits visual sensory signals to the occipital lobe of the brain?
What transmits visual sensory signals to the occipital lobe of the brain?
What is the irregularly shaped outer portion of the ear called?
What is the irregularly shaped outer portion of the ear called?
Questions and Answers
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Study Notes
Study Notes
Eye Anatomy
- Retina: Innermost layer of the eye responsible for light detection.
- Aqueous and Vitreous Humors: Fluids that fill the eyeball, maintaining its shape.
- Tympanic Membrane: Also known as the eardrum, equalizes pressure through the Eustachian tube.
- Optic Nerve: Transmits visual signals from the retina to the brain's occipital lobe.
- Cones: Retina's sensory cells that detect bright light and enable color vision.
Sense of Taste
- Umami: One of the five basic tastes, alongside sweet, salty, sour, and bitter.
- Taste Buds: Located in tiny bumps called Papillae on the tongue, responsible for taste sensation.
- Taste Sensation: About 75% to 90% of taste is influenced by smell.
Auditory System
- Auditory Canal: Tubular structure connecting outer ear to the eardrum.
- Vestibule: Inner ear chamber containing three semicircular canals, important for balance.
- Amusia: Condition characterized by singing off-key; linked to auditory processing.
Ear Health and Conditions
- Earwax (Cerumen): Secreted by ceruminous glands, protects against bacteria and debris.
- Labyrinthitis: Clinical term for inner ear infections.
- Tinnitus: Ringing sound in the ear; dizziness is not the primary cause.
- Rhinitis: Common cold is a frequent cause of nasal inflammation and blockage.
Nasal and Olfactory Function
- Histamines: Molecules that cause nasal congestion and irritation reactions.
- Olfactory Region: Tiny area at the top of each nasal cavity containing smell sensors.
- Olfactory Nerve: Pathway transmitting smell signals from the nasal cavity to the brain.
Other Notable Structures
- Lacrimal Glands: Located above each eye, responsible for tear production.
- Auricle: Irregularly shaped outer part of the ear crucial for sound collection.
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