Sensory System Unit
The pathway of light goes through these parts of the eye in order:
1) Cornea 2) Aqueous humor 3) Pupil 4) Lens 5) Vitreous humor
Outer Ear includes:
1) Pinna, auditory canal, tympanic membrane
Layers of the Eye include:
1) Sclera 2) Choroid coat 3) Retina
Inner Ear includes:
1) cochlea 2) semicircular canals
Middle Ear includes:
1) ossicles 2) eustachian tube
The four basic tastes and their regions of the tongue are:
1) sweet 2) salty 3) sour 4) bitter
How much information about a person's surroundings reaches the brain through the eyes?
90%
Which of these conditions are contagious?
All of the above
What is the name of the mucous membrane that lines the eyelids and covers the front of the eye?
Conjunctiva
What part of the ear allows air to enter to help equalize pressure on both sides of the tympanic membrane?
Eustachian tube
Vision, hearing, smell, taste, and touch are part of the integumentary system.
False
What part of the ear is the most complex?
Inner Ear
What is the name of the visible part of the outer ear?
Pinna
What is the function of the sensory system?
Receive stimuli to allow the body to react to changes
In which part of the eye are cones and rods located?
Retina
What part of the ear helps to maintain balance?
Semicircular canals in the inner ear
Which type of hearing loss results from damage to the inner ear or auditory nerve and usually cannot be corrected?
Sensory hearing loss
tympanic membrane
Sound waves are collected and channeled through the canal, or the eardrum
What is the treatment for cataracts?
Surgical replacement of the lens of the eye
Taste and the Tongue
Taste is one of the five special senses. The tongue is the organ that controls this sense. It is a mass of muscle tissue that contains projections called papillae, which contain "taste buds."
cilia
They are nerve cells covered with tiny hairs
Ossicles
They are small bones and they receive sound from the vibrations of the tympanic membrane and in turn transmit the sound waves to the inner ear.
semicircular canals
They contain fluid and delicate, hair-like cells that bend when the liquid moves with head and body movements. These impulses are sent to the cerebellum to help maintain balance.
What is the purpose of the wax secreted by glands in the auditory canal?
To protect the ear
What part of the ear is also known as the eardrum?
Tympanic membrane
What causes a common cold?
Virus
Conjunctiva
a mucous membrane, lines the eyelids and covers the front of the eye to provide added protection and moisture
Which of these parts of the eye help to refract light rays to focus them on the retina?
all of the above
Auditory canal
also known as the external auditory meatus which contains special glands that secrete wax to protect the ear.
treatment of Otitis media include:
antibiotics and possibly inserting tubes to relieve the pressure and fluid in the ear.
General Senses
are involved in feeling touch, temperature, pressure, and pain.
Rods
are used for vision in the dark or dim light.
Olfactory receptors
at the top of the nasal cavity make the sense of smell possible
The cells that sense color and are mainly used for vision in bright light are _______.
cones
Eustachian tube
connects the middle ear to the pharynx, or throat.
lacrimal glands
constantly clean the eye and keep it moist.
Choroid coat
contains many blood vessels that nourish the eyes.
Retina
contains many layers of nerve cells that transmit the impulses from the light rays to the optic nerve.
Each general sense receptor is capable of perceiving many types of feelings.
false
The sense of taste is more sensitive than the sense of smell.
false
lens
is a clear, circular structure located behind the pupil. It refracts, or bends, the light rays so they focus on the retina.
aqueous humor
is a clear, watery fluid that fills the space between the cornea and the iris.
Cataract
is a condition where the lens of the eye gradually becomes cloudy, which causes blurred or partial vision.
cold
is a respiratory infection.
The middle ear
is a small chamber in the temporal bone
Conjunctivitis
is also called "pink eye." It is an inflammation of the eyelid caused by a bacteria or virus, and it is extremely infectious.
Otitis media
is an infection of the middle ear caused by a bacteria or virus.
Sclera
is made of tough connective tissue and is often referred to as the "white" of the eye
Vision
is one of the five special senses
Sense of Smell
is one of the five special senses, the nose is the organ that controls this sense
Hearing
is one of the five special senses. The ear is the organ that controls this sense as well as the sense of balance
iris
is the colored portion of the eye, located behind the cornea on the front of the choroid coat.
vitreous humor
is the jellylike substance that fills the area behind the lens.
inner ear
is the most complex section of the ear
pupil
is the opening in the center of the iris.
The Eye
is the organ that controls this sense
Conductive hearing loss
occurs when sound waves are not carried to the inner ear
Sensory hearing loss
occurs when the inner ear or auditory nerve is damaged.
The nerve cells that receive stimuli for the sense of smell are _______ receptors.
olfactory
Pinna
or Auricle, is the visible part of the outer ear.
Hearing loss
or deafness has two classifications, conductive or sensory.
symptoms of Otitis media include:
pressure or pain in the ear and fever.
sensory system
refers to the special senses associated with vision, hearing, smell, taste, and touch
treatment of a cold include:
rest and medications to relieve symptoms.
The cells that are used for vision in the dark or dim light are _______.
rods
taste buds
send a signal to the brain to detect the flavor of the food.
Cones
sense color and are mainly used for vision in bright light
symptoms of a cold include:
sneezing, runny nose, sore throat, congestion, and cough.
Diseases and Disorders of the Ear
symptoms: pressure or pain in the ear and fever. treatment: antibiotics and possibly inserting tubes to relieve the pressure and fluid in the ear.
Diseases and Disorders of the Eye
symptoms: reddening of the eyelids and sclera. Treatment: involves antibiotics
Diseases and Disorders of the Nose
symptoms: sneezing, runny nose, sore throat, congestion, and cough. treatment: rest and medications to relieve symptoms.
Bitter
tastes at the back.
Sour
tastes at the sides.
Sweet
tastes at the tip.
Salty
tastes near the tip.
Tears clean the eye and keep it moist.
true
Two muscles in the iris control the size of the pupil and how much light enters the eye.
true
Cochlea
which is shaped like a snail shell. Inside the cochlea, delicate, hair-like cells make up the organ of Corti. The cells pick up sound waves and pass them on to the auditory nerve, which sends the impulse to the brain to be interpreted.