Mechanoreception No.1 Flashcards Preview

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Flashcards in Mechanoreception No.1 Deck (43)
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1

what is mechanorception

detection of mechanical stimuli
with mechanoreceptors

2

what is adequate stimulus

pressure
vibration
tension

3

what is touch

sensory experience when mechanoreceptors are excited
involves CNS

4

what is exteroceptive

give information about things coming into contact with the body

5

what is proprioception

awareness of position

6

what is exteroceptors

muscosala nd skin receps
- mehanoreceps
-nociceptors
-thermoreceps
- chemoreceps

PDL Mechanoreceps

7

what are proprioceptors

PDL mechanoreceps
muscle spindles
joint recess
golgi tendon organs
inner ear

8

what do the mechanorecps of mucosa do

food texture- swallow food suitable
imp for mastication

9

what is function of PDL ligament mechanoreceps

forces of teeth

10

what are the mechanoreps in muscle

muscle spindles - monitor muscle length

11

what are mechanoreceps in joint recess useful for

joint position and movement

12

what sit he effect of stimulation of mechanorecps

sensation of touch
reflexes - jaw jerk, salivary reflexes
interact other sensory modalities - rubbing

13

what is the theory of vibraject

vibrating to activate the mechanorecps with vibration at same place of place activating nociceptors therefore trying to gate close and inhibit 3pain path

14

types of mechanoreceptorrs

physioloial classification
- aaptative properties -receptive field size

anatomical classification

15

what is rapidly adopting

AP force fires and then stops and adapts to force and maybe fires again when force goes off respond to changing states

16

what si slow adapting

apply same force and some receptors fire ad detect AP's thro whole duration doesn't adapt or very slow adapts

17

what are the four types of mechanoreceps

RA I
RA II
SA I
SA II

18

what is a receptive field

the area where a stimulus will affect the receptor covered by one receptor

19

what are the properties of RA I

small receptive field and rapid adaptation

20

what are the properties of RA II

large receptive field and rapid adaptation

21

what are the properties of SA I

small receptive field and slow adaptation

22

what are the properties of SA II

large receptive field and slow adaptation

23

what are some mechanoreceptors

meissners corpuscle
pacianian corpuscle
merkel cells
Ruffini ending

24

what are some RA I receptors

preset in
- oral mucosa
- vermillion border
- mucosa of lip
- hard palate

25

what are some RA II receptors

pacinian corpuscles
depp in mucosa
rare in oral mucosa

26

what are some SA I receptors

present in
- tongue
- lips
- cheeks

27

what ar some SA II Receptors

ruffini endings
PDL

28

what is transduction

mechanical to electrical energy
causes deep to AP

29

what is a parent axon

type nerve carry info
A- beta large myelinated fibres- fast

30

what are touch thresholds

lips and oral mucosa - 10 mg
teeth 0.01N

sense of being touched