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41 Cards in this Set
- Front
- Back
- 3rd side (hint)
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What are the 3 cranial nerves that transmit impulse for taste? |
Facial Vagus Glossopharyngeal |
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What is light that we can see? Red waves vs violet |
Visible light Red wavelengths are longest with low energy Violet wavelengths are shortest most energetic |
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Color blindness |
Most common in men Attached to the X chromosome If the female child has it then the father must be colorblind and the mother is a carrier |
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To focus on close vision the eye has to (3) |
1. Pupils constrict 2. Eyeballs converge 3. Lens Accommodates- lens changes shape |
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Emmetropic Eye |
20/20 vision |
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Myopic Eye |
Nearsighted The eye is too long The focal point is before the fovea centralis |
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What type of lens fixes myopic eye? |
Concave lenses Spread out the rays |
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Hyperopic |
Farsighted The eye is too short The focal point is further than the fovea centralis |
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What type of lens fixes farsightedness? |
Convex Causes a dramatic bend to bring them together |
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What kind of muscle is the iris? |
Smooth and involuntary muscle |
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What are the three layers/tunics of the eye |
Retina Choroid Sclera |
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Light Adaption Switches from what to what |
Light uses rods Dark uses cones |
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Dark adaptation |
From cones to rods Takes 20 minutes |
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Nyctalopia |
Night blindness |
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Auricle Pinna |
The ear The shell shaped projection surrounding the opening |
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Tympanic Membrane |
Eardrum The boundary between the outer and middle ear |
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Tympanic Cavity |
Middle ear Small, air-filled, mucosa-lined cavity |
Where in the ear? Size, filling, lining |
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Auditory Tube |
In the middle ear Flattened and closed Needs ear popping otherwise sounds distort |
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What type of receptor is responsible for taste and smell? |
Chemoreceptors They receive taste in the olfactory system and smell in the gustatory system |
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What is the sensory receptor organ for taste? |
Taste buds and the papillae are responsible for taste There are over 10,00 taste buds There are three types of papillae |
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What are the three types of papilla and where are they located? |
Fungiform- allover Folace- on the sides Volate- in the back |
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How many ossicles are there? What are they? |
3 Hammer/Malleous Anvil/Incus Stape/stirrups |
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What are the three portions of the ear? |
The inner Middle Outer |
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What allows us to see in color? |
Photoreceptors |
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Name the three parts of the vascular tunic |
Iris Ciliary body Choroid |
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What is the function of the iris |
The iris controls the diameter and size of the pupil, determining how much light can enter |
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What does the ciliary body do? |
Lens accommodation Lens maintenance/keeping it in place And production and resorption of the aqueous humor |
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What does the choroid do? |
Brings oxygen and nutrients to the eye |
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What is the function of the lens? |
It focuses light on the retina. We see through it, objects flipped, but our brain flips it the proper way. |
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What is found in the fovea centralis? |
Cones |
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Anosmia |
The condition in which someone cannot smell |
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Lysosomes |
A bacteria killing enzyme found in the lacrimal apparatus |
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What forms the fibrous tunic? |
The Scalera and the choroid |
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What are the accessory structures of the eye? (5) |
Eyebrows eyelids conjunctiva lacrimal apparatus extrinsic Eye muscles |
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What do the eyebrows do |
Shade the eyes from sunlight and sweat |
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What does the lacrimal apparatus do |
Cleanses the eye by creating tears |
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What do the eyelids do |
They protect the eyes by blinking in assisting the lacrimal apparatus |
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Where is the conjuctiva located |
The lining of the eye |
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What do the extrinsic Eye muscles do |
They allow the eye to move |
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What percent of taste is smell |
80 |
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What are two factors that alter the taste |
Texture and temperature |
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