Brainscape's Knowledge GenomeTM

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


See full index

Neuro > Trigeminal System N22 > Flashcards

Trigeminal System N22 Flashcards

1
Q

Origin of Sensory division of Trigeminal N.

A

Trigeminal ganglion –>
Spinal Trigeminal nucleus/tract
Chief (main/principle) sensory nucleus
Mesencephalic nucleus/tract

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

Origin of Motor division of Trigeminal N.

A

Motor nucleus of trigeminal n

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

Trigeminal n Sensory division function

A

GENERAL SOMATIC SINSIBILITY (vibration, touch, conscious and unconscious proprioception, pain and temperature)

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

Trigeminal n Motor division function

A

innervation of muscles of mastication (temporal is, masseter, medial/lateraly pterygoids, tensor tympani, tensor veli palatine, anterior digastric belly, mylohyoid)

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

Function of general somatic afferent (GSA) components of Trigeminal n.

A

General sensations of the face, nasal and oral cavities, dura mater and proprioception

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

GSA Nuclei (3)

A

Spinal Trigeminal Nucleus, Chief (main/principle) sensory nucleus, Mesencephalic nucleus
Which all form a continuous column of cells

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

Spinal Trigeminal Nucleus

A

Lateral tegmentum of medulla and caudal pons; considered to be a rostral continuation of the SUBSTANTIA GELATINOSA

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

Spinal Trigeminal Tract continuation of ______

A

Considered to be a rostral continuation of Lissauer’s Tract

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

Spinal Trigeminal Tract is analogous to _______

A

ANTEROLATERAL SYSTEM: pain, temperature, crude touch

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

Chief (Main/Principle) Sensory Nucleus

A

Located in the dorsolateral pontine tegmentum (midpons)

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

Chief Nucleus Function

A

Fine touch, 2-pt discrimination, vibration, conscious proprioception of head

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

Chief Nucleus is analogous to ________

A

DC-ML

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

Mesencephalic Nucleus location

A

Rostral pons and caudal midbrain

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

Mesencephalic Nucleus Function

A

UNCONSCIOUS PROPRIOCEPTION - acts as primary sensory ganglia (DRG)

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

Mesencephalic Nucleus is analogous to _____

A

Spinocerebellar System

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

Peripheral Sensory division is split into 3 divisions:

A

V1: opthalmic V2: maxillary V3: mandibular (NO overlap)

17
Q

Trigeminal ganglion of the sensory root contains

A

Cell bodies of peripheral processes; in trigeminal cave (Meckel’s) in middle cranial fossa; acts like DRG

18
Q

Trigeminal ganglion of motor root contains

A

Cell bodies for fibers in V3: mandibular division

19
Q

Primary afferent axons will enter either

A

Chief sensory nucleus at same level (midpons) or descend to spinal trigeminal nucleus

20
Q

Chief Nucleus receives which primary afferent axons

A

Large afferent inputs for fine touch, vibratory and conscious proprioception

21
Q

Spinal Trigeminal Nucleus receives which primary afferent axons

A

Small afferent inputs for pain, temperature, and crude touch

22
Q

Afferents path to synapse on Spinal trigeminal nucleus

A

descend lateral to spinal trigeminal nucleus as SPINAL TRACT OF TRIGEMINAL N (Sp V Tr)

23
Q

Mesencephalic nucleus receives

A

afferents that travel from the periphery via mesencephalic tract for unconscious proprioception information from muscle spindles in the muscles of mastication

24
Q

Motor Component fibers paths

A

Motor Trigeminal nucleus (pons)–> middle cerebellar peduncle –> V3

25
Q

Motor trigeminal nucleus receives

A

bilateral cortical input

26
Q

Ventral Trigeminothalamic Tract (VTTT) have fibers from which two nuclei

A

Spinal trigeminal and Chief sensory

27
Q

VTTT fibers from Spinal Trigeminal Nucleus

A

Exit nucleus –> decussate –> ascend as VTTT (near ALS) –> VPM of thalamus –> lateral primary somatosensory cortex (3,1,2)

28
Q

VTTT fibers from Spinal Trigeminal Nucleus carry

A

sensory information for slow, dull pain, and reflexes

29
Q

Reflexes from VTTT spinal Trigeminal Nucleus synapse on

A

Reticular Formation

30
Q

VTTT fibers from Chief Sensory Nucleus

A

Exit nucleus –> decussate –> ascend as VTTT (near ML) –> VPM of thalamus –> lateral primary somatosensory cortex (3,1,2)

31
Q

VTTT fibers from Chief Sensory Nucleus carry

A

sensory information for 2-point discrimination, fien touch, vibration, conscious proprioception

32
Q

Dorsal Trigeminothalamic Tract (DTTT)

A

small, IPSILATERAL, from chief nucleus to ipsilateral VPM

33
Q

Processes leaving the Spinal trigeminal nucleus

A
  1. VTTT –> VPM of thalamus
  2. Reticular formation –> Intralaminar thalamic nuclei
  3. PAG and SC –> reflexive movement of head and control of pain

Neuro (23 decks)

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