Viscerosomatic Sensation Flashcards
Group 1 type fiber supply what information? What about A-beta? A delta? C?
Grp 1 - Propioception
A-b - Skin mechanoreceptors
A-d - Cool, sharp pain
C - warm/cool, aching pain, itch
Which have a higher receptive field, upper or lower order neurons?
Upper (multiple lowers converge on each)
Spatial resolution of higher order neurons inmporved by _
Combo of excitation and inhibition that “highlights” the receptive field of the firing neuron
Touch is mediated by what 4 types of receptors? What is adaptation? Receptive field size?
Meissners, Merkels, Pacinian, Ruffini
Fast-Slow-Fast-Slow
Small-Small-Large-Large
Conscious propioceptors are _. Where are they located?
Joint receptors
In ligaments and joint receptors
Signal conscious joint angles
Non conscious propioceptors are _. Where are they located?
Muscle spindle, Golgi tendon organs
MS - muscle length and speed of stretch
GTO - Tendon tension
4 temp sensations are cold, cool, warm and hot. Which are detected by thermoreceptors? Which by nociceptors?
Thermo - Cool and warm
Nocis - Cold and hot
3 types of nociceptors are _
Thermal Mechanical Polymodal (chemical, mechanical, thermal)
Silent nociceptors are _
Nociceptors that respond only in the presence of injury
Joint nociceptors are found in _, Silent nociceptors are enriched in _
Joints and cartilage
Joints
Muscle nociceptors are found in _
Connective tissue surrounding muscles
Peripheral sensitization refers to _ hyperalgesia, while central sensitization refers to _ hyperalgesia
Primary
Secondary
The viscera has mechano, thermo and chemo sensory receptors. [true or false] Are these concious or non-concious?
True
Non-concious, except for pain
Majority of visceral nociceptors are _ type of receptors
Chemoreceptors
