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43 Cards in this Set
- Front
- Back
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__________corpuscles are sensitive to skin stretch |
ruffini |
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the ability to know where your body is in space without the use of vision is called______________ |
proprioception |
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unmyelinated terminal branches of a sensory neuron are called ______________ nerve endings |
naked |
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stimulation of a nociceptor may cause nociceptor pain, whereas damage to the nervous system itself may cause _______ pain |
neuropathic |
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the unipolar neuron coming from a muscle spindle is referred to as a __________ fibre |
1 a |
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muscle spindles are _____________ receptors that respond to stretch and signal changes in muscle length |
either are acceptable: sensory mechanoreceptors |
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of the two major types of nociceptors, which is responsible for the withdrawal of reflex?_________ |
a-delta |
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which spinal nerves innervate the following upper limb dermatomes: medial elbow______radial border of hand _____ |
medial elbow___T1___ radial border of hand ___C6___ |
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T/F: muscle spindles are found in greatest abundance in muscles that are responsible for gross (large) movements |
false |
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T/F: every receptor has a defined area in the periphery |
true |
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what is the name of the defined area in the receptor's periphery called |
receptive field |
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T/F: stimuli falling outside the receptor field will be unable to affect the receptor |
true |
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what is spatial discrimination (there are two functions for this ) |
1. the ability to accurately locate the site of stimulation 2. and detect neighbouring stimuli are actually seperate |
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what is the tactile sensitivity |
the sense of touch |
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what are key factors of tactile sensitivity |
1. density of receptors 2. size of the receptive fields in a particular skin region |
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T/F: on the back, the density of tactile receptors is greatly reduced and spacial discrimination is relatively poor |
true |
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T/F: on the hands and feet, the density of tactile receptors is greatly reduced and spacial discrimination is relatively poor |
false |
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what is a two-point threshold |
the minimal distance in which 2 separate stimuli can be distinguished |
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what is the meaning of derma |
skin |
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what is the meaning of toma |
cut |
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what is a dermatome |
a combination of the receptive field of the sensory axons originating from a single nerve |
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what is a nerve |
a bundle of axons in the PNS |
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what makes dermatomes so complexed |
embryological development |
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list the upper limb dermatomes |
C5: lateral shoulder & arm C6: thumb, index finger (radial border/hand) C7: middle finger C8: digiti minimi (ulnar border/hand) T1: medial elbow |
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list the thoracic dermatomes |
T2-T12: intercostal nn. form segmental strips on thorax T10: goes across the umbilicus T12: (subcostal nerve) goes across upper edge of the pubic bone |
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C5 dermatome: |
lateral shoulder & arm |
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C6 dermatome: |
thumb, index finger (radial border/hand) |
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C7 dermatome: |
middle finger |
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C8 dermatome: |
digiti minimi (ulnar border/hand) |
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T1 dermatome: |
medial elbow |
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T2-T12 dermatome: |
intercostal nn. form segmental strips on thorax |
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T10 dermatome: |
goes across the umbilicus |
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T12 dermatome: |
(subcostal nerve) goes across upper edge of the pubic bone |
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where does shingles present itself on the body |
T10 dermatome: goes across the umbilicus |
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what are sensory receptor classifications |
location morphology adequate stimulus |
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where are cutaneous receptors found |
dermis and epidermis |
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where are meissner corpuscles and merkel cells found |
uppermost part of the dermis especially the superficial layers of glabrous skin |
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what is glabrous skin |
hairless parts of the skin |
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what are some examples of glabrous skin |
fingertips, lips, between the brows |
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what type of touch does the meissner corpuscles and merkel detect |
fine touch |
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what is the aka for fine touch |
discriminative touch |
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where are Ruffini corpuscles found |
in glabrous skin |
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what does Ruffini corpuscles monitor |
slippage of objects along the surface |
