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40 Cards in this Set
- Front
- Back
Sensory receptors: |
Detect changes in the internal and external environment |
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Receptor response function: |
Responds to stimuli by converting them to nerve impulses. |
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Receptor potential: |
Develops when a stimulus acts on a receptor. |
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Threshold |
Baseline levels |
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Adaptation (Numb) |
Adaptation in relation to receptor potential decrease in response to stimulus, leads to decrease in impulse rate and decrease in sensation. |
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Receptors for special senses: |
Smell, taste, vision, hearing, equilibrium |
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skin
mucosa connective tissues muscles tendons joints viscera |
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Sensory receptors classification by location |
Exteroceptors Visceroceptors (interoceptor) Proprioceptors |
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On the body or surface: A. Exteroceptors B. Visceroceptors C. Proprioceptors |
A. Exteroceptors |
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Located internally, often within the body organs, or visera: A. Viseroceptors B. Proprioceptors C. Exteroceptors |
A. Viseroceptors
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Location limited to skeletal muscle, joint capsules, and tendons:
A. Viseroceptors B. Exteroceptors C. Proprioceptors |
C. Proprioceptors |
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Classification by Stimulus detected: COMPTN |
Chemoreceptors Osmorepceptors Mechanoreceptors Photoreceptors Thermoreceptors Nociceptors |
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Ex: of Mechanoreceptors? |
Stretching of muscle and pressure applied to skin. |
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Activated when "deformed" the generate receptor: A. Chemoreceptors B. Mechanoreceptors C. Thermoreceptors |
B. Mechanoreceptors
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Activated by amount or changing concentration of certain chemicals: Taste or smell A. Thermoreceptors B. Chemoreceptors C. Mechanoreceptors |
B. Chemoreceptors
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Activated by changes in temperature: A. Thermoreceptors B. Chemoreceptors C. Mechanoreceptors |
A. Thermoreceptors
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The sensation produced is pain: A. Photoreceptors B. Osmoreceptors C. Nociceptors |
C. Nociceptors
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Found only in the eye; responds to light stimuli if intensity is great enough to generate a receptor potential: B. Osmoreceptors C. Nociceptors |
A. Photoreceptors
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Concentrated in the hypothalamus; activated by changes in concentration of electrolytes: A. Photoreceptors B. Osmoreceptors C. Nociceptors |
B. Osmoreceptors
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Free nerve ending |
is a widely distributed sensory receptor which include exteroreceptors and viseroreceptors. |
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Free nerve ending sensations include:
MMITT |
movement mechanical stretching itching tickle touch
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Olfactory sense organs types: |
Olfactory cilia Olfactory cells Olfactory epithelium Olfactory receptors |
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Located on the olfactory neurons that touch the olfactory epithelium lining the upper surface of nasal cavity. |
Olfactory cilia |
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Chemorereceptors; gas molecules of chemicals dissolved mucus covering the nasal epithelium stimulate olfactory cells |
Olfactory cells |
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Located in most superior portion of nasal cavity |
Olfactory epithelium |
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Extremely sensitive and easily fatigued |
Olfactory receptors |
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what does taste buds respond to? |
Gustatory and taste associated with papillae |
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Primary taste sensation: |
Sweet, sour, bitter, salty. |
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Visible portion of the ear: |
Auricle, pinna |
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what is a External auditory meatus? |
Tube that leads from auricle to the temporal bone and ending at tympanic membrane. |
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Tiny epithelium-lined cavity hollowed out of the temporal bone |
Middle ear |
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Auditory ossicles of middle ear: |
Malleus Incus Stapes |
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Bony labyrinth is made up of: |
Vestibule Cochlea Semicircular canals |
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Cochlea is involved with: |
Hearing |
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Fluids in ear: |
Endolymph Perilymph |
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Sound created by vibration: |
Inner ear |
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Tough, white, fibrous tissue (outer coat) A. Sclera B. Choroid C. Retina |
A. Sclera |
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Contains many blood vessels and large amount of pigment (middle coat) B. Choroid C. Retina |
B. Choroid
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Incomplete innermost coat of eyeball
A. Sclera B. Choroid C. Retina
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C. Retina |
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Layers of neurons that make up the sensory retina? |
Photoreceptor neurons Rods Cones |