Somatosensory Disorders Flashcards

1
Q

What are examples of tactile receptors?

A

Low threshold mechanoreceptors - Merkel’s, Pacinian, Ruffini etc.

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2
Q
What is the location of:
A) Meissner's 
B) Merkels 
C) Pacinian corpuscles
D) Ruffini endings
A

A) Between papillae
B) Aligned with papillae
C) Subcutaneous Tissue
D) Deep in dermis, axis parallel to skin

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3
Q
What are the function of:
A) Pacinian
B) Merkels
C) Meissners
D) Ruffini
A

A) Vibration
B) Pressure, deep touch, texture
C) Fine touch
D) Stretch

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4
Q

Noxious heat and noxious cold activate what class of receptors?

A

Trp
Menthol - TrpM8 - (Are you tripping mate, i don’t want a menthol filter)
Capsaicin (in peppers) - TrpV1

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5
Q

What is the function of the secondary somatosensory cortex?

A

Sensory and motor integration

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6
Q

From where does the secondary somatosensory cortex receive inputs from to form a joined up body image?

A

Corpus callosum

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7
Q

What is at the posterior parietal cortex ?

A

Sensory association cortex

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8
Q

What is agnosia?

A

Can’t recognise an object

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9
Q

What is neglect?

A

Disregard body part/visual field due to right hemisphere damage.

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10
Q

What is astereoagnosia?

A

Cant identify objects on touch alone

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