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23 Cards in this Set
- Front
- Back
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receptors distributed over Lrg parts of the body. 2 sub grps: Somatic senses & visceral seses
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genera senses
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provide sensory info about the body & environment (touch, pressure, itch, Vibe, temp, pain, prioception (info about l position of bod 4)
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somatic senses
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info about internee organs [pain & pressure)
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visceral senses
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conscious awareness
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sensation
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Respond to mechanical stimuli. (compression, sending, stretching of cells)
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mechanoreceptor
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tactile disk _ found in basal layer of the epidermis. respond to light touch & superficial pressure
mechanoreceptor |
Merkel's disk
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onion looking structure w/ dendrite in center, found w/in deep Regions of the dermis or in the hypodermis; respond to deep pressure & vibration
mechanoreceptor |
Pacian corpuscles
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(tactile corpuscle) in dermal paprika. detect Simultaneous Stimulation @ 2 pnts on skin -> 2 pnts = 1
mechanoreceptors |
meissner's corpuscle
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over stimulation = decreased sensitivity to a continued stimulation
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adaptation (accommodation)
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generates AD as along Stimulus is applied; accommodate Very slowly
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Tonic Stimulation
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more sensitive to changes than tonic receptors; accommodate very slowly
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pnasic receptors
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part of anterolateral sys = sensory from skin ->to brain.
acts in 3 sequential neurons. '-primary neuron: transmits AP from perphery-> spinal cord gray matter -Secondary neuron: decussates@commisswe & enters & ascends to thalamus. - tertiary: from thalamus to cerebral cortex (specifiCally the somatic Cortex) |
spinothalmic tra(t
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project to superior colliCuli; transmit AP assoc w/ Visual reflexes in response to some type of Stimulus onthe skin
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spinotectal tracts
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posterior to the central sulcus post central gyrus
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primary somatic sensory cortex
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separates parietal lobe about midway along the length of the cerebrum.
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central sulcus
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anterior to central sulcus the precentral gyrUs
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primary motors cortex
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taste end of the post central gyrus (primary sensory area).
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taste area
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inferior frontal lobe; both conscious & unconscious) responses to odor are initiated here.
a primary sensory area |
olfactory cortex
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superior temporal lobe.
a primary sensory area |
primary auditory cortex
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occipital lobe.
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visual cortex
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area just anterior to primary motor cortex where motor functions are organized
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premoter area
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Impairment in the performance of learned activity
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apraxia
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area involved in motivation, intelligence, abstract ideas, judgment, empathy & conscience; and maybe center for aggression
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prefrontal lobe.
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