Brainscape's Knowledge GenomeTM

Browse over 1 million classes created by top students, professors, publishers, and experts.


See full index

Neuroscience > somatosensory II > Flashcards

somatosensory II Flashcards

1
Q

spinothalamic tract projects to

A

VPL and intralaminar nuclei of thalamus

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

spinomesencephalic tract projects to

A

periaquaductal gray and tectum

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

spinoreticular tract projects to

A

reticular formation of medulla, pons, midbrain

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

spinobulbar tract projects to

A

brainstem nuclei

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

spinohypothalamic tract projects to

A

hypothalamus

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

allodynia

A

body says “turn down for what?!”

this is CENTRAL SENSITIZATION so where normal sensory information (like touch) can be percieved as pain.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

sensory neurons enter the dorsal roots and bifurcate.
whats medial?
whats lateral?

A

medials are more MEATY (large fibers); synapse on lamina III-V
laterals are small fibers; synapse on lamina I, II, V

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

senses in ALS that are different from PCML system

A

hypesthesia, paresthesia, anesthesia

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

feel the burn: (pain and temp)
what are the fast burners? why?
lamina?

A

A delta are lightly myelinated

1 and 5

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

feel the burn: (pain and temp)
what are the slow burners? why?
lamina?

A

C are unmyelinated

1 and 2 and 3 (specific tracts in ALS have different lamina for C fibers)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

lamina 2/3 is responsible for

A

cock-blocking the incoming pain signal.
SUBSTANTIA GELATINOSA it is the gate keeper for which signals are painful. pain is modulated at the level of the dorsal horn

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

lamina of nucleus proprius

A

4,5,6

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

what is a triple response to pain

A

you get fast pain sensation(A delta). slow pain sensation(C fibers), and inflammation

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

what is the role of hypothalamus in pain

A

connects the pain to emotion and ALS

=> this is is why people like S&M

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

what is the role of the insular cortex in pain

A

connections give you the “dislike” part of feeling pain

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

what is the role of the hippocapus in pain? amygdala?

A

hippocampus does pain memory

amygdala does the fear and anxiety part of pain

17
Q

you get stuck by a needle. what is the role of substance P in pain

A

1 - substance P (a peptide) is in nerves
2 - it is released at the site to bind with arterioles leading to the FLARE RESPONSE
3 - it binds to mast cells for inflammation/histamine - WHEAL RESPONSE

18
Q

what neurons DESCEND and synapse on lamina 2/3? why?

A

RAPHESPINAL pain modulation!

remember?! thats what happens in those two lamina!!

19
Q

I sprayed you with pepper spray.
what system is it?
fibers?
synapse?

A

paleospinothalamic tract
C fibers
lamina II and III

20
Q 
you accidentally got warming lube on your face
what system is it?
first order neurons?
second order neurons?
decussate?
A

anterior trigeminothalamic tract is most important
1 = trigeminal ganglion
2 = spinal trigeminal nucleus
decussate to form the ventral trigeminothalamic tract

21
Q

what are the cock-blocker cells of the dorsal horn?

A

enkephalinergic interneurons. they work PRE-synaptically.

22
Q

opiates are also cock-blockers. How?

A

made in the PAG, they “go down” on the raphe nucleus so that when the pain signal comes in, it gets turned off

23
Q

serotonin is a ____

A

cock-blocker. but its for the primary aferents. aka the pain signal gets to the spinal cord, but serotonin kills the mood

24
Q

trans cutaneous nerve stimulation treatment is based off of

A

gate control theory

25
Q

rhizotomy is

A

transection of dorsal roots

26
Q

ventral trigeminothalamic tract mediates?

A

pain and temp sensation from the face and oral cavity

27
Q

dorsal trigeminothalamic tract mediates?

A

tactile discrimination and pressure sensation from the face and oral cavity (meissner/pacinian corpuscles)

28
Q

afferent/efferent limb of corneal reflex

A 
ophthalmic n (V1)
facial n
29
Q

afferent/efferent limb jaw jerk reflex

A 
mandibular n (V3)
mandibular n (V3)
30
Q

afferent/efferent limb tearing (lacrimal) reflex

A 
ophthalmic n (V1)
facial n
31
Q

afferent/efferent limb oculocardiac reflex

A 
ophthalmic n (V1)
vagal n

Neuroscience (23 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2024 Bold Learning Solutions. Terms and Conditions