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35 Cards in this Set
- Front
- Back
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A stimulus is a specific form of energy in the outside environment that is detected by _____.
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a sensory receptor
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_____ is defined as a decrease in the response to an ongoing stimulus.
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Sensory adaptation
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What type of sensation is touch?
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somatic
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Chemoreceptors play a role in the sense of _____.
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taste and touch
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In the _____, neurons are arranged like maps that correspond to different parts of the body surface.
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cerebral cortex
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Mechanoreceptors in the _____ send signals to the brain about the body's position relative to gravity.
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ear
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The middle ear functions in _____.
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amplifying and transmitting sound waves
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sensitive to vibrations
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hair cell
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functions in balance
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vestibular apparatus
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detects color
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cone cell
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detects dim light
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rod cell
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contains chemoreceptor
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tast bud
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focuses rays of light
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lens
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sorts out sound waves
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cochlea
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helps brain assess heat, pressure, pain
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free nerve ending
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Which of the following receptors detects changes in the concentration of solutes in body fluid?
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osmoreceptors
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All sensory receptors transduce stimulus energy into ________.
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action potentials
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A strong stimulus is perceived as more intense than a weak stimulus because a strong stimulus recruits ________.
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many sensory receptors, each sending a standard action potential
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Light pressure in the upper dermis of the fingertips is detected by ________.
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Meissner's corpuscles
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When neurons release substance P, then ________.
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pain receptors have been stimulated
signals are relayed to the sensory cortex endorphins and enkephalins may be released |
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What sensory structure's primary purpose is detection of pheromones?
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vomeronasal organ
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Which chemoreceptors detect chemicals dissolved in fluid?
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olfactory receptors
taste receptors vomeronasal organ |
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What receptors are most important to the sense of balance?
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mechanoreceptors
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Hair cells in the vestibular apparatus have cilia that bend when ________ moves past them.
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fluid
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The loudness of a sound is dependent on wave ________.
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amplitude
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What are the 3 bones of the middle ear?
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hammer
anvil stirrup |
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The transduction of sound waves into action potentials takes place in the ________.
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cochlea
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Which part of the eye is primarily concerned with regulating the amount of light that reaches the retina?
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iris
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Which of the following can adjust to focus light on the retina?
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cornea and lens
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Compound eyes are different from simple eyes because compound eyes have ________while simple eyes have one.
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many lenses
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What do cone cells of the eye detect?
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bright light
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Signals from rods and cones initially converge on ________.
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bipolar cells
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In nearsightedness, the image is ________.
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focused in front of the retina
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Laser surgery (LASIK) to refocus light reshapes the ________.
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cornea
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What are some fact about age-related macular degeneration?
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During age-related macular degeneration, the photoreceptors in the macula are destroyed
The macula is a small spot in the retina that is the basis for clear vision. People with age-related macular degeneration have more trouble seeing in the center of the visual field than at the periphery. |
