Somatosensory Disorders Flashcards
What are examples of tactile receptors?
Low threshold mechanoreceptors - Merkel’s, Pacinian, Ruffini etc.
What is the location of: A) Meissner's B) Merkels C) Pacinian corpuscles D) Ruffini endings
A) Between papillae
B) Aligned with papillae
C) Subcutaneous Tissue
D) Deep in dermis, axis parallel to skin
What are the function of: A) Pacinian B) Merkels C) Meissners D) Ruffini
A) Vibration
B) Pressure, deep touch, texture
C) Fine touch
D) Stretch
Noxious heat and noxious cold activate what class of receptors?
Trp
Menthol - TrpM8 - (Are you tripping mate, i don’t want a menthol filter)
Capsaicin (in peppers) - TrpV1
What is the function of the secondary somatosensory cortex?
Sensory and motor integration
From where does the secondary somatosensory cortex receive inputs from to form a joined up body image?
Corpus callosum
What is at the posterior parietal cortex ?
Sensory association cortex
What is agnosia?
Can’t recognise an object
What is neglect?
Disregard body part/visual field due to right hemisphere damage.
What is astereoagnosia?
Cant identify objects on touch alone