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BIO 2300 Unit 2 > Spinal Nerves And Cranial Nerves > Flashcards

Spinal Nerves And Cranial Nerves Flashcards

1
Q

_______+________= spinal nerve

A

Posterior (sensory) root + Anterior (motor) root

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2
Q

Spinal nerve divides into?

A

Posterior ramus and anterior ramus

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3
Q

Anterior or posterior ramus is larger?

A

Anterior

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4
Q

What does the posterior Rami innervate?

A

Intrinsic back muscles and skin above

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5
Q

What does anterior Rami innervate?

A

Muscles and skin that posterior Rami doesn’t innervate.

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6
Q

31 pairs of spinal nerves.

A 
8 cervical 
12 thoracic 
5 lumbar
5 sacral 
1 coccygeal
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7
Q

The spinal nerve is named in Thoracic lumbar sacral and coccygeal regions…

A

Named for vertebra above

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8
Q

Cranial nerve I

Name, passageway, function

A

Olfactory
Cribriform plate
Special Sensory only (smell)

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9
Q

Cranial nerve II

Name , passageway, function

A

Optic
Optic canal
Special sensory only (sight)

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10
Q

Cranial Nerve III

Name , passageway, function

A

Oculomotor
Superior orbital fissure
Motor only
(somatic and *parasympathetic)

Somatic: superior, medial and inferior rectus
Inferior oblique
Parasympathetic: to sphincter pupillae and ciliary muscles

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11
Q

4 motor extraocular muscles

A

Superior rectus
Medial rectus
Inferior rectus
Inferior oblique

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12
Q

Where do the 2 parasympathetic oculomotor nerves go to?

A 
Sphincter pupillae (control dialation and opposite)
Ciliary muscles (lens portion)
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13
Q

Cranial nerve IV

Name , passageway, function

A

Trochlear
Superior orbital fissure
Motor only (somatic)

(Controls superior oblique muscle)

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14
Q

Cranial nerve V

Name , passageway, function

A

Trigeminal
V1: Ophthalmic
Superior orbital fissure
Sensory (general) only

V2: Maxillary
Foramen rotundum
Sensory (general) only

V3: mandibular
Foramen ovale
Both somatic motor and general sensory

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15
Q

Cranial nerve VI

Name , passageway, function

A

Abducens
Superior orbital fissure
Motor only (somatic)

Innervates lateral rectus

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16
Q

Cranial nerve VII

Name , passageway, function

A

Facial
Enters: internal acoustic meatus
Exits: stylomastoid foramen

Somatic- motor
Parasympathetic- (visceral motor)

Somatic: zygomaticus orbicularis oculi, orbicularis oris etc.
Parasympathetic (visceral motor): lacrimal gland, submandibular and sublingual glads

General (sensory): skin around hole in ear.
Special (sensory): to toungue. Taste to anterior 2/3rds of toungue.

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17
Q

Parasympathetic glands that CN VII controls

A

Lacrimal gland

Submandibular and sublingual glands

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18
Q

Cranial nerve VIII

Name , passageway, function

A 
Vestibulocochlear 
Internal acoustic meatus 
Special sensory balance and hearing 
Balance - vestibular branch 
Hearing - cochlear branch

Heads toward brainstem (medulla oblongata)

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19
Q

Cranial nerve IX

Name , passageway, function

A 
Glossopharyngeal
Jugular foramen 
Both motor and sensory 
Somatic (to stylopharyngeus muscle) 
 and parasympathetic (to parotid gland)

General sensory around ear, inner ear and pharynx

Special sensory (taste) on 1/3 posterior of tongue

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20
Q

Cranial nerve X

Name , passageway, function

A

(Wanderer) Vagus
Jugular foramen
Both motor and sensory

Somatic (motor): muscles of pharynx
Parasympathetic (motor): smooth muscle of trachea, bronchi, digestive tract, cardiac muscle
Visceral (general sensory): pharynx, larynx, trachea, bronchi, heart, esophagus, stomach and intestines
Special (sensory): taste on the epiglottis

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21
Q

Cranial nerve XI

Name , passageway, function

A

Accessory or spinal accessory
Jugular foramen
Motor only (somatic)

SCM and traps

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22
Q

Cranial nerve XII

Name , passageway, function

A

Hypoglossal
Hypoglossal canal
Motor only (somatic)

Muscles of tongue

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23
Q

___ ___ innervates common fibular division

and tibial division (lumbosacral plexus)

A

Sciatic nerve

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24
Q

C5-T1 is what nerve?

A

Brachial plexus

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25
How many pairs of spinal nerves?
31
26
#s and regions of spinal nerves
``` Cervical 8 Thoracic 12 Lumbar 5 Sacral 5 Coccygeal 1 ```
27
Where is the C8 spinal nerve?
Between C7 and T1
28
For thoracic sacral lumbar and Thoracic, spinal nerve is named for vertebra ______.
Above
29
cervical spinal nerve is named for vertebra ______.
Below
30
3 questions to apply to reach cranial nerve
What is the name and number for each cranial nerve? What is the entrance/exit (passageway) for each cranial nerve? What is the function of each cranial nerve (Motor, sensory, or both)?
31
Cranial nerve I name
Olfactory
32
Cranial nerve III name
Oculomotor
33
Cranial nerve IV name
Trochlear
34
Cranial nerve II name
Optic
35
Cranial nerve VII name
Facial
36
Cranial nerve VIII name
Vestibulocochlear
37
Cranial nerve V name
Trigeminal
38
Cranial nerve X name
Vagus
39
Cranial nerve IX name
Glossopharyngeal
40
Cranial nerve VI name
Abducens
41
Cranial nerve XII name
Hypoglossal
42
Cranial nerve XI name
Accessory
43
Big bulge on one of roots by spinal cord is called.
Posterior root ganglion
44
Optic nerve picture 5 structures are?
``` Eyeballs Optic nerve Optic chiasm Optic optic tract Pituitary gland ```
45
Structures in picture of oculomotor cranial nerve are?
``` Oculomotor nerve Superior rectus Medial rectus Inferior rectus Inferior oblique Optic nerve Sphincter pupillae (para) Ciliary muscles (para) ```
46
Structure that allows pupil to change in size.
Sphincter pupillae
47
Area that accommodate the lens by making it more spherical.
Sphincter pupillae
48
Names, passageway, and functions of CN V 1, 2 and 3
CN V1: ophthalmic, Sup orbital fiss (general sensory) CN V2: maxillary Foramen Rotun (general sensory) CN V3: mandibular Foramen Ovale (general sensory and somatic motor)
49
The lumbosacral plexus is the______ nerve and starts and ends at which vertebraes?
Sciatic nerve | L4-S4
50
The arm plexus is the______ plexus and starts and ends at which vertebraes?
Brachial plexus | C5-T1
51
The anterior ramus' branch out into what?
Nerve Plexus
52
What is the name of the plexus by the arm?
Brachial plexus
53
What are the spinal vertebra associates with brachial plexus?
C5-T1
54
What is the nerve plexus by leg?
Lumbosacral or sciatic nerve
55
Which nerve innervates the anterior 2/3rds of tongue?
Facial nerve
56
Which nerve innervates the posterior 1/3rd of tongue?
Glossopharyngeal nerve
57
Where does the vestibulocochlear nerve travel to?
Between pons and medulla oblongata
58
What muscle does glossopharyngeal innervate?
Stylopharyngeus muscle
59
Facial nerve innervates submandibular, sublingual, and lacrimal glands. Which gland does glossopharyngeal innervate?
Parotid gland
60
Why is vagus special sensory?
Taste on epiglottis
61
Why is vagus somatic motor?
Muscles of pharynx
62
What muscles do the accessory N. Innervate?
Trapezius | Sternocleidomastoid
63
What does glossal mean?
Tongue
64
Contraction of sphincter pupillae results in...
Pupillary constriction
65
What are the 4 things that happen with parasympathetic innervation?
Heart rate decreases Digestive secretions promoted Peristalsis Construction of pupils
66
How does cn. VII help with parasympathetic?
Saliva production
67
How does cn. IX help with parasympathetic?
Saliva production
68
Vagus nerve s part in parasympathetic.
Decrease heartrate Promote digestive secretions Peristalsis

BIO 2300 Unit 2 (9 decks)

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