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I. Neuroanatomy > Somatosensory (F) > Flashcards

Somatosensory (F) Flashcards

1
Q

What are the different sensory systems (and their fiber type)?

A
  1. Olfactory (SVA)
  2. Taste (SVA)
  3. Hearing (SSA)
  4. Vision (SSA)
  5. Somatosensory (GSA)
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2
Q

What does the sensory system provide that is important for accurate motor movement?

A
  1. Joint position
  2. Muscle tension
  3. Velocity of muscle movement
  4. Contact of body with external surfaces
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3
Q

How many laminae are in the Lamina of Rexed? 1. What are they organized based off of? 2

A
  1. 10

2. cytoarchitecture

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4
Q

What lamina of the Lamina of Rexed compose the dorsal horn>?

A

I-VI

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5
Q

What are the very short axons that synapse a few hundred micrometers from the soma in the Lamina of Rexed? 1. Where do the fibers in the Lamina of Rexed project to? 2

A
  1. interneurons

2. distant parts of CNS (e.g. thalamus)

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6
Q

Where are somatic motor neurons in the Lamina of Rexed? 1. Where are GVE fibers? 2

A
  1. lamina IX

2. lamina VII

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7
Q

What are the three major divisions of the spinal cord white matter?

A
  1. Dorsal Funiculus
  2. Lateral Funiculi
  3. Ventral Funiculus
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8
Q

What are the three major divisions of the spinal cord white matter?

A
  1. Dorsal Funiculus
  2. Lateral Funiculi
  3. Ventral Funiculus
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9
Q

What is the dorsal funiculus divided into? 1. What separates these two sections? 2

A
  1. fasciculus gracilis and fasciculus cuneatus

2. posterior median sulcus

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10
Q

What separates the sections of the ventral funiculus? 1. What connects the sections? 2

A
  1. deep anterior median fissure

2. ventral white commissure

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11
Q

Where do the sensory tracts run within the brainstem?

A

tegmentum

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12
Q

What is the only sensory info that does not go through the thalamus?

A

olfactory

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13
Q

What cortical layer does feedback to the thalamus come from?

A

layer 6

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14
Q

What are the specific nuclei in the thalamus that project to discrete cortical areas?

A
  1. VPL
  2. VPM
  3. VPI
  4. VPS
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15
Q

What are the specific nuclei in the thalamus that project to discrete cortical areas?

A
  1. VPL
  2. VPM
  3. VPI
  4. VPS
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16
Q

Is damage to the red nucleus more likely to affect the fasciculus cuneatus or gracilis?

A

cuneatus because it is closer

17
Q

Is damage to the red nucleus more likely to affect the fasciculus cuneatus or gracilis?

A

cuneatus because it is closer

18
Q

What is a transection of half of cord at any level called? 1. What is the result? 2

A
  1. Brown Sequard

2. loss of ipsilesional DC and contralesional ALS from lesion site down

19
Q

What is a transection of half of cord at any level called? 1. What is the result? 2

A
  1. Brown Sequard

2. loss of ipsilesional DC and contralesional ALS from lesion site down

20
Q

What are two other names for the Trigeminal Ganglion (V)? 1. Where is the ganglion located? 2

A
  1. Semilunar ganglion and Gassarian ganglion

2. floor of middle cranial fossa

21
Q

What are two other names for the Trigeminal Ganglion (V)? 1. Where is the ganglion located? 2

A
  1. Semilunar ganglion and Gassarian ganglion

2. floor of middle cranial fossa

22
Q

Where do all central fibers (GSA fibers) synapse?

A

Trigeminal Sensory Nucleus

23
Q

What are the sections of the Trigeminal Sensory Nucleus?

A
  1. Mesencephalic
  2. Pontine (chief)
  3. Spinal
24
Q

What Trigeminal Sensory Nucleus section is responsible for proprioception for face and jaw?

A

mesencephalic

25
Q

What Trigeminal Sensory Nucleus section is responsible for two point discrimination, vibration, touch, etc for face and jaw?

A

pontine (chief)

26
Q

What are the three sections of the spinal section of the Trigeminal Sensory Nucleus? 1-3. What are these responsible for? 4

A
  1. Pars oralis
  2. Pars interpolaris
  3. Pars caudalis
  4. pain
27
Q

What is the disease in which a nerve process distal to injury begins to degrade? 1. After it heals, what percentage of the original axon diameter grows back? 2

A
  1. Wallerain Degeneration

2. 80%

I. Neuroanatomy (18 decks)

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