Term
| The importance of understanding the senses |
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Definition
sensory function mediates the information
about the world that an animal receives
- sensory structures control exactly what and
how much information reaches the brain
- sensory neural systems encode, organize and
decode information from the environment
- perception defines an animal’s reality and
is a function of neural activity |
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Term
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Definition
Vision – seeing with eyes and visual system
Hearing – ears and the auditory system
Smell – the nose and olfactory system
Taste – the tongue and gustatory system
Touch – skin and somatosensory sys |
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Term
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Definition
Iris - colored, control light level
Pupil – hole in iris, light passes
Cornea –outer layer, refracts light
Lens – further refraction, focusing
Retina – sensory epithelium – rods and cones
Rods and Cones – photoreceptors (level and color) |
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Term
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Definition
Camera (Us)
Pinhole (fish)
compound- many eyes, like insects, no focusing mechanism, specialized in motion detection |
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Definition
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Term
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Definition
| has upper and lower hemispheres, can see UV to infrared |
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Definition
| mos accurate vision on Earth. have evolved a net of blood vessels that block light that blocks having blind spot |
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Definition
Pinna – outer ear – funnels sound
Ear Drum – sound waves into fluid waves
Middle ear bones – amplify waves
Cochlea – inner ear, contains sensory epithelium
Auditory nerve - carries electrical signal to brain |
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Definition
| in Bats, use echolocation to navigate environment in dark. emitting and receiving echoes of very fast, very high frequency sounds. |
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Definition
elephants pass air through nasl passages
generate infrasound
travels miles with minimal degradation
allows communication over long distances |
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Definition
| like human, with lens for focus, antrhopod, terrestrial & aquatic vertebrae |
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Term
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Definition
many lenses
Insects, centipedes, crustaceans, horseshoe crabs
No focusing mechanism – focus depends on distance
Specialized for motion detection, very high flicker-fusion
Works like a low res monitor |
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