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61 Cards in this Set
- Front
- Back
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Contains ear nerve cells that signal the brain |
Cochlea |
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Window to they eye |
Cornea |
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The ____________ spot is where the blood vessels join the eye? |
Blind spot |
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Organ that detects smell |
the nose |
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Nerves that carry messages from the ear to the brain |
Auditory nerves |
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the gland that produces oil in the skin |
Sebaceous gland |
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Longsightedness is also called...? |
Hyperopia |
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Clear thin layer covering the eye |
Conjunctiva |
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Muscles that change the shape of the lens in the eye |
Ciliary |
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List the three sections of the ear |
1. inner 2. middle 3. outer |
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Yellow spot packed with colour-detecting cells |
Fovea |
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white protective layer surrounding the eye |
Sclerotic |
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Eye sockets are also known as...? |
Eye orbits |
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Eye orbits are also known as....? |
Eye sockets |
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Mechanical device similar to the eye is...?
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Camera |
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Why is a camera similar to an eye? List 2 things |
1. Lens which focuses 2. detects colour and light |
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The ear ____________ is a thin membrane that vibrates in response to sound |
Eardrum |
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Loss of ability to focus on short distances due to aging is called....? |
Presbyopia |
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Condition involving ringing in the ears |
Tinnitus |
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Middle layer of the skin |
Dermis |
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Inner layer of the skin |
Fatty layer |
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Outer layer of the skin |
epidermis |
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Layer that absorbs light and prevents reflection within the eye |
Choroid |
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Sense organ that detects light |
Eye |
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Cell that detects heat, touch, pressure etc |
Receptor cells |
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Cochlear implant is another name for a...? |
Bionic ear |
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Evaporation of __________ cools the skin |
sweat |
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List the three ossicles |
1. Hammer 2. anvil 3. stirrup (has) |
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Nerve cells that detect smells |
Olfactory nerves |
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In dim light, your pupils may become_________? |
Dilated (enlarged) |
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The group of three small bones in the ear is called the.....? |
The ossicles |
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Sense organ that detects sound |
ear |
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Layer of light sensitive cells at the back of the eye |
The retina |
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Bottom layer of skin is called the ...? |
Fatty layer |
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Hole in the iris is called...? |
the pupil |
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Would a WIDER or THINNER convex lens have a longer focal length |
Thinner |
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Would a WIDER or THINNER convex lens have a shorter focal length |
Wider |
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Where is the focal point for people who are longsighted |
Behind the retina |
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Where is the focal point for people who are shortsighted |
in front of the retina |
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Shortsightedness is also know as |
Myopia |
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What is light refraction? |
refraction |
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Why does light refraction occur |
Light changes speed and direction when it crosses the boundary between two different media. |
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Which travels faster, sound or light? |
light |
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What is colour blindness |
Inability to distinguish between two different colours |
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Does colour blindness affect more men or women? |
Men |
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The loudness of sound is measured in what unit? |
Decibels |
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What level of sound is "just able to be heard"? |
5-10db |
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What level of sound is "a speaking voice"? |
70db |
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What level of sound can break an eardrum? |
150db |
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How does sound travel? |
On air particles |
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Why does sound travel faster in a solid? |
??? |
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What unit is sound pitch measured in? |
Hertz (Hz) |
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What is the pitch range of the human ear |
20 to 20,000 Hz, |
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How does our nose detect smell? |
Your sense of smell comes from your olfactory nerve cells high up in your nose. When smell hits these cells, they send messages up to the brain telling you what the smell is. |
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How many smells can a human nose distinguish? |
A human nose can distinguish around 2000 smells. A nose that has been well trained, can distinguish up to 10000. |
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How is smell related to taste? |
Smell makes up around 80% of taste. |
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List the four different tastes we can detect. |
1. Sweet 2.Sour 3.Salty 4.Bitter |
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List the 5 different receptors in the skin. |
1.Heat 2.Cold 3.Pressure 4.Touch 5.Pain |
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Why are some areas of the body more sensitive to touch than others? |
The parts of our body that are more sensitive to touch than others have the most touch receptors in them. They are usually parts of our body that come into contact with other objects the most. |
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Ligaments that hold the lens in place in they eye are called? |
Suspensory ligaments |
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Small holes in the skin are called |
pores |
