Ray-1 Flashcards
(6 cards)
1
Q
Somatosensory receptors
A
- Classified by energy transduced
- Mechanoreceptors
- Thermoreceptors
- Nociceptors (pain receptors)
2
Q
Mechanoreceptors
A
- Pacinian Corpuscle
- Meissner’s Corpuscle
- Ruffini Ending
- Merkel Cell
3
Q
Pacinian Corpuscle
A
Mechanoreceptor
- RA (rapidly adapting)
- AB
- Receptive Field size: Large
- due to vibration sensitive
- responds to Contact; Vibration
- acceleration points in skin indentation
- aka vibration detector
4
Q
Meissner’s Corpuscle
A
Mechanoreceptor
- RA
- AB
- Respond to: skin indentation
- Contact
- velocity changes (ramps of skin movement)
- no responsse with steady indentation
- flutter (slow vibration)
- Contact
- Receptive Field: Small
5
Q
Ruffini Ending
A
Mechanoreceptor
- SA type II
- AB
- Respond to:
- Both: velocity ramp (dynamic phase) and plateau (static phase) of skin indentation
- Pressure (intensity)
- Skin stretch
- Both: velocity ramp (dynamic phase) and plateau (static phase) of skin indentation
- Receptive field:
- Large, stretch sensitive receptive field
6
Q
Merkel Cell
A
Mechanoreceptor
- SA type I
- AB
-
Epithelial cell that has a synapse with the neuron
- cannot produce action potentials
- Respond to:
- Pressure
- Texture
- Receptive Field: Small
- AKA pressure receptor