Receptive Fields Vs. Motor Units and Somatosensory Receptors Flashcards
A receptive field is the area of skin innervated by?
one sensory neuron or DRG neuron
smaller receptive fields = ____
discrimination
better
densely innervated areas of skin have ___ receptive fields, and ____ tactile discrimination,
small
better
A dermatome contains all the ____ for all DRG cells in a ______supplying a _____
receptive fields
dorsal root ganglion
spinal nerve
In receptive fields, Spatially distinct areas of skin project to distinct areas of _____
CNS
An area with smaller receptive fields like finger tips gives ___ discrimination
better
Smaller receptive fields requires ____ sensory and CNS neurons to process the information
more
Merkel’s disk are ____ and synapse with ____;
They respond to fine touch, dense in fingers; cutaneous
non-encapsulated
nerve endings
Merkel’s disk respond to ___, are dense in fingers, and are cutaneous
Fine touch
cutaneous
Pacinian corpuscles are ____
: respond to ___ and
____, and are found subcutaneously
encapsulated
pressure and vibration
subcutaneously
Free nerve endings can respond to ___ and ____
touch and temperature
Meissner’s corpuscle processes encapsulated by modified _____; They have fine touch; epidermal ridges; dense in finger pads
Schwann cells
Thermoreceptors respond to temperature and are mostly free ___ ___
nerve endings
Myotome is all muscles innervated by ____
one spinal nerve
