SENSORY RECEPTORS Flashcards
Aβ-II
Aδ-III
C-IV
all skin, epidermis and some viscera
pain, temperature
free nerve endings
large, myelinated fibers; adapt quickly
glabrous (hairless) skin
dynamic, fine/light touch, position sense, low frequency vibration
Meissner corpuscles
large, myelinated fibers; adapt quickly
deep skin layers, ligaments, joints
high frequency vibration, pressure
Pacinian corpuscles
large, myelinated fibers; adapt slowly
finger tips, superficial skin
pressure, deep static touch like shapes, edges, position sense
merkel discs
dendritic endings with capsule; adapt slowly
finger tips, joints
pressure, slippage of objects along surface of skin, joint angle change
Ruffini corpuscles
what is this free nerve ending:
fast, myelinated fibers
Secondary receptors of muscle spindle All cutaneous mechanoreceptors
Aβ-II
what is this free nerve ending:
fast but taxC is slow
Free nerve endings of touch and pressure Nociceptors of neospinothalamic tract Cold thermoreceptors
Aδ-III
what is this free nerve ending:
slow, unmyelinated
Nociceptors of paleospinothalamic tract Warmth receptors
C-IV
