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37 Cards in this Set
- Front
- Back
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Whats nearsightedness? |
you can see near by clearly, but have trouble seeing far away. |
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What's farsightedness? |
you can see far away objects clearly, but need help seeing nearby objects. |
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How can you correct nearsightedness? |
Concave lens |
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How can you correct farsightedness? |
convex lens |
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How is sound produced? |
vibration |
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What can sound travel through? |
gases, liquids, and solids |
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What does sound best travel through |
liquid |
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Explain out ear and its function. |
receives sound waves (looks like a funnel) |
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Explain middle ear and its function. |
starts with the eardrum which vibrates when sound hits it. |
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What are three bones in the ear? |
hammer, anvil, and stirrup |
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explain function of inner ear. |
stirrup vibrates against thin membrane, which send vibration to cochlea. Fluid in cochlea vibrates, which stimulates receptors. |
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where is balanced controlled? |
Inner ear in the semicircular canal |
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whats semicircular canals? |
located above cochlea, controls balance. lined up with tiny hairs, contain fluid. |
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smell and taste depend on... |
chemicals in the ar |
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nose can distinguish______ basic odors |
50 |
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What are five basic taste sensations? |
sweet, bitter, sour, salty, and umami |
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What is the largest sense organ |
skin |
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cornea |
clear tissue that covers front of eye |
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pupil |
opening in which light enters the eye |
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iris |
circle of muscles that control how much light enters the eye |
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lens |
flexible structure that focuses light |
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retina |
line back of the eye and absorbs light |
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rods |
receptors that see black and white |
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cones |
receptors that see color |
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how is sound produced in the ear |
the outer ear receives the sound waves that go to the eardrum in the middle ear and vibrates. A chain reaction is caused of the hammer, anvil, and stirrup. in the inner ear the stirrup vibrates against a thin membrane which send vibrations to the cochlea. fluid in the cochlea stimulates the sound. |
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eardrum |
vibrates when sound hits it |
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cochlea |
fluid in cochlea vibrates which stimulates sound |
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semicircular canals |
controls balance |
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what kind of touch receptors are found in the skin |
light touch and pressure |
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three effects on drug abuse |
tolerance , addiction, and withdrawl |
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what organs are damaged by alcohol abuse? |
liver and brain |
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depressant |
drugs that slow down the activity of the cns |
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stimulants |
aped up the body's processes |
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where is light touch |
upper dermis |
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where is pressure |
deeper dermis |
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dermis also sense.. |
temperature and pain |
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4 receptors of touch are... |
temperature, pain, pressure, and light touch |
