Sensory Endings Flashcards
Free Nerve Ending: Fiber type
C—slow, unmyelinated fbers
Aδ—fAst, myelinated fbers
Meissner Corpuscles: Fiber type
Large, myelinated fibers; adapt quickly
Pacinian corpuscles: Fiber type
Large, myelinated fbers; adapt quickly
Merkel Discs: Fiber type
Large, myelinated fbers; adapt quickly
Ruffini Corpuscles: Fiber type
Dendritic endings with capsule; adapt slowly
Free Nerve Ending: Location
All skin, epidermis, some viscera
Meissner Corpuscles: Location
Glabrous (hairless) skin
Pacinian corpuscles: Location
Deep skin layers
ligaments
joints
Merkel Discs:Location
Finger tips
superficial skin
Ruffini Corpuscles: Location
Finger tips
joints
Free Nerve Ending: Senses
Pain
temperature
Meissner Corpuscles: Senses
Dynamic
fne/light touch
position sense
Pacinian corpuscles: Senses
Vibration
pressure
Merkel Discs: Senses
Pressure
deep static touch (eg, shapes, edges)
position sense
Ruffini Corpuscles: Senses
Pressure
slippage of objects along surface of skin
joint angle change
