Brainscape's Knowledge GenomeTM

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


See full index

A Neuroanatomy > Overview of cranial nerves > Flashcards

Overview of cranial nerves Flashcards

1
Q

Which nerve(s) exit at cerebrum?

A

Optic (I) & Olfactory (II) nerves

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

Which nerve(s) emerge from midbrain?

A

Oculomotor (III) nerve

Trochlear (IV) nerve

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

Which nerve(s) emerge from pons?

A

Trigeminal Nerve (CN V)

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

Which nerve(s) emerge from pontomedullary junction?

A 
Abducens nerve (CN VI)
Facial nerve (CN VII)
Vestibulocochlear nerve (VIII)
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

Which nerve(s) emerge from medulla?

A 
Glossopharyngeal nerve (CN IX)
Vagus nerve (CN X)
Hypoglossal nerve (CN XII)
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

Which nerve(s) emerge mostly from spinal cord?

A

Accessory Nerve (XI)

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

The course of motor fibers of cranial nerves

A
  • Originate in the brain
  • carry motor signals from brain to structure they innervate
  • Efferent fibers
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

The course of sensory fibers of cranial nerves

A
  • Carry signals in opposite direction from receptors to brain
  • Afferent fibers
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

What are 3 types of motor nuclei

A

Somatomotor nuclei (or GSE, general somatic efferent))

Branchiomotor or special visceromotor (SVM, SVE) )

General visceromotor (GVM or GVE) / parasympathetic, secretomotor (CN III., VII., IX., X.).)

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

The role of Somatomotor nuclei (or GSE, general somatic efferent))

A
  • Innervates innervate striated muscles derived from somites (of the eye and tongue).
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

Describe (Branchiomotor or special visceromotor (SVM, SVE) )

A
  • innervate striated muscles (but these muscles developed from brancial arches): muscles of mastication, facial expression, pharynx and larynx muscles
  • The other name is special visceromotor because they innervate the wall of viscera (mouth, nose, larynx, pharynx) but striated muscles [instead of smooth muscles, see the next group] there.
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

Describe General visceromotor (GVM or GVE) / parasympathetic, secretomotor (CN III., VII., IX., X.).)

A

They innervate viscera: smooth muscles or glands (e.g. the sphincter muscle of the pupil, salivary glands, glands and smooth muscles of abdominal and thoracic viscera).

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

What are 4 types of sensory nuclei

A

GVS: General viscerosensory (or GVA)
SVS: Special viscerosensory (or SVA)
GSS: General somatosensory (or GSA)
SSS: Special somatosensory (or SSA)

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

The role of GVS: General viscerosensory (or GVA)

A

They receive afferent fibres input from interoceptors / chemo- and baroreceptors (carotid sinus, carotid body, abdominal and thoracic viscera).

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

The role of SVS: Special viscerosensory (or SVA)

A 
for taste (an organ of special senses). 
-> Also relay neurons - they receive afferent inputs from the taste fibres coming from the taste buds (e.g. from the tongue).
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

Describe the role of GSS: General somatosensory (or GSA)

A

they receive afferent fibres from somatic (body) receptors: mechano-, noci- or thermoreceptors (from the skin, muscles and joints of the head)

17
Q

Three different sensory subtypes of GSS: General somatosensory (or GSA)exist
-> They are

A
  1. epicritic: fine / discriminative touch and pressure, vibration
  2. protopathic: vitally important informations:
    - pain
    - rough (non discriminative, crude) touch - temperature
  3. proprioceptive: the position of the muscles, joints (information from the body of the subject: „proper”=self) – afferent inputs from muscle spindles, tendon organs
18
Q

describe SSS: Special somatosensory (or SSA)

A

They receive afferent fibres carrying vestibular and auditory signals (from the ear). They belong to organs of special senses (hearing and balance).

19
Q

What are the 5 pure motor nerves?

A
  • Oculomotor nerve (III) (+ para)
  • Trochlear nerve (IV)
  • Abducens nerve (VI)
  • Accessory nerve (XI)
  • Hypoglossal nerve (XII)
20
Q

What are the 3 pure sensory nerves?

A
  • Olfactory (I)
  • Optic (II)
  • Vestibulocochlear nerve (VIII)
21
Q

What are the 4 mixed nerves?

A
  • Trigeminal nerve (CN V)
  • Facial nerve (CN VII) (+ para)
  • Glossopharyngeal nerve (IX) (+ para)
  • Vagus nerve (X) (+ para)
22
Q

What are the 4 nerves that carry parasympathetic info.?

A
  • Oculomotor nerve III - Motor/Para.
  • Facial nerve VII - Mixed/Para.
  • Glossopharyngeal nerve IX - Mixed/Para.
  • Vagus nerve X - Mixed/Para.
23
Q

Name 2 nuclei of oculomotor nerve

A

Oculomotor nucl.

Accessory oculomotor nucl. (Westphal-Edinger)

24
Q

The role of Oculomotor nucl.

A
  • Somatic efferent motor nucleus (SM: Somatomotor)
  • Innervates the inferior and superior rectus, inferior oblique, medial rectus muscles of the eyebulb and the levator palpebrae superioris muscle.
25
Q

The role of nuclei of trochlear nerve

A

Trochlear nucleus: somatomotor (efferent) nucleus, innervates the superior oblique muscle of the eyebulb

26
Q

The role of Abducent nucl.

A
  • Somatomotor (efferent) nucleus

- Innervates the lateral rectus muscle of the eyebulb

27
Q

List Sensory ganglia

A
  • Trigeminal ganglion (CN V) (Mesencephalic trigeminal nucleus (CN V)
  • Geniculate ganglion (CN VII)
  • Spiral ganglion (CN VIII)
  • Vestibular ganglion (CN VIII)
  • Superior and inferior ganglion of CN IX
  • Superior and inferior ganglion of CN X
28
Q

List the nucleus of trigeminal nerve

A
  1. Motor. trigeminal nucl -> BM: Branchiomotor or special visceromotor (SVM)
  2. GSS: General somatosensory
    • Mesencephalic trigeminal nucl. (ganglion cells in the CNS!) Proprioceptive.
    • Princeps sensory nucl. (pontine nucl.) of trigeminal nerve. Epicritic.
    • Spinal trigeminal nucl. (receives fibres from CN V.,VII.,IX.,X.) Protopathic.
29
Q

List nuclei of facial nerve CN VII

A
  1. Facial nucl.
    - BM: Branchiomotor or special visceromotor (SVM)
  2. Sup. salivatory nucl.
    - GVM: General visceromotor
  3. Solitary tract nucl
    - SVS: Special viscerosensory
30
Q

List nuclei of Glossopharyngeal CN IX

A
  1. Ambiguus nucl. - BM: Branchiomotor or special visceromotor (SVM)
  2. Inf. salivatory nucl. - GVM: General visceromotor
  3. Lat. ala cinerea nucl. - GVS: General viscerosensory
  4. Solitary tract nucl - SVS: Special viscerosensory
31
Q

List nuclei of vagus nerve

A
  1. Ambiguus nucl. - BM: Branchiomotor or special visceromotor (SVM)
  2. dorsal vagal nucl. - GVM: General visceromotor
  3. Lat. ala cinerea nucl. - GVS: General viscerosensory
  4. Solitary tract nucl - SVS: Special viscerosensory
32
Q

List nuclei of accessory nerve

A
  1. Ambiguus nucl. - BM: Branchiomotor or special visceromotor (SVM)
  2. Lat. ala cinerea nucl. - GVS: General viscerosensory
  3. Solitary tract nucl - SVS: Special viscerosensory
33
Q

List nuclei of Hypoglossal nerve

A

Hypoglossal nucl. - SM: Somatomotor

A Neuroanatomy (43 decks)

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