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NeurosciencešŸ§  > Somatosensory II > Flashcards

Somatosensory II Flashcards

1
Q

The ALS system conveysā€¦

A

crude touch, primary pain, and temperature information from the body to the cortex

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2
Q

The trigeminal system conveysā€¦

A

crude touch, primary pain, and temperature information from the face to the cortex

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3
Q

Which are the 3 types of receptors that transmit crude touch, pain, and temperature information?

A

mechanoreceptors, thermonociceptors, and C-polymodal nociceptors

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4
Q

Which of these receptors responds to various types of noxius stimulu and encodes pain that is poorly localized?

A. mechanoreceptors
B. C- Polymodal Nociceptors
C. Thermonociceptors

A

B. C-Polymodal Nociceptors

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5
Q

Which receptor type responds to mechanical tissue damage and encode well localized pain?

A. mechanoreceptors
B. C- Polymodal Nociceptors
C. Thermonociceptors

A

A. Mechanoreceptors

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6
Q

Which of these types of fibers are mylinated?

A. group Ia and Ib
B. group II
C. group III
D. group IV
E. A, B, and C

A

E

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7
Q

Which of these fibers has the slowest condition velocity and the smallest axon diameter?

A. group Ia and Ib
B. group II
C. group III
D. group IV

A

D. group IV

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8
Q

Primary hyperalgesia isā€¦

A. an exaggerated response to pain in the region of damaged skin
B. an exaggerated response to pain in the skin bordering the damaged tissue

A

A. an exaggerated response to pain in the region of damaged skin

  • B is secondary hyperalgesia
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9
Q

In peripheral sensitization receptors become ____ sensitive and ____ responsive to noxious stimulation after an injury.

A: less, less
B. more, more
C. less, more
D. more, less

A

B: more, more

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10
Q

Select all that apply: The direct pathway of the ALSā€¦

A. conveys group IV fibers
B. conveys group III fibers
C. sends information directly to the cortex
D. is for precise localization

A

B, C, D.

The direct pathway: conveys group III fibers, sends info directly to the cortex, and is for precise localization

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11
Q

What fibers are in the indirect pathway?

A

group IV fibers

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12
Q

A patient with a right MCA stroke may experienceā€¦

A
  • a loss of crude touch, pain, and temperature information impacting the left upper limb and face
  • the left lower limb remains intact
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13
Q

A patient with a left MCA stroke may experienceā€¦

A
  • Loss of crude touch, pain, and temperature information impacting the right upper limb and face
  • The right lower limb remains intact.
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14
Q

A patient with a right PCA stroke may experienceā€¦

A

Loss of crude touch, pain, & temperature information impacting the entire left side of the body and face.

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15
Q

A patient with a left PCA stroke may experienceā€¦

A

Loss of crude touch, pain and temperature information impacting the entire right side of the body and face

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16
Q

Which areas of the brain are involved in top-down modulation of pain?

A. spinal cord
B. brainstem
C. Thalamus
D. hypothalamus
E. amygdala
F. cortex
G. all of the above

A

All of the above

17
Q

What is two point discrimination?

A

the ability to identify two close points on a small area of skin

18
Q

What is graphesthesia?

A

The ability to sense writing on the skin

19
Q

What is stereognosis?

A

The ability to sense the form and nature of an object

20
Q

What is double simultaneous stimulation?

A

The ability to sense two stimuli when applied at the same time

21
Q

What is complex regional pain syndrome?

A

pain being out of proportion to the injury

22
Q

How would one test the ALS system?

A. two point discrimination
B. pin prick test
C. hot/cold stimuli test
D. both B & C

A

D. both B & C

23
Q

What is hyperalgesia?

A. pain due to a stimulus that does not normally provoke pain
B. changes in skin temperature/color
C. increased sensitivity to feeling pain and an extreme response to pain

A

C. increased sensitivity to feeling pain and an extreme response to pain

24
Q

What is Allodynia?

A. pain due to a stimulus that does not normally provoke pain
B. changes in skin temperature/color
C. increased sensitivity to feeling pain and an extreme response to pain

A

A. pain due to a stimulus that does not normally provoke pain

25
Q

Congenital insensitivity to pain isā€¦

A

a gene mutation that prevents the generation of APā€™s in the primary afferents that convey pain signals

26
Q

Phantom limb pain is characterized asā€¦

A

Feeling of pain in an absent limb or portion of a limb

NeurosciencešŸ§  (12 decks)

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