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

Spinal Nerves And Cranial Nerves Flashcards

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Biology 101 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
Q

How many pairs of spinal nerves?

A

31

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26
Q

s and regions of spinal nerves

A 
Cervical 8 
Thoracic 12 
Lumbar 5 
Sacral 5 
Coccygeal 1
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27
Q

Where is the C8 spinal nerve?

A

Between C7 and T1

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28
Q

For thoracic sacral lumbar and Thoracic, spinal nerve is named for vertebra ______.

A

Above

29
Q

cervical spinal nerve is named for vertebra ______.

A

Below

30
Q

3 questions to apply to reach cranial nerve

A

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
Q

Cranial nerve I name

A

Olfactory

32
Q

Cranial nerve III name

A

Oculomotor

33
Q

Cranial nerve IV name

A

Trochlear

34
Q

Cranial nerve II name

A

Optic

35
Q

Cranial nerve VII name

A

Facial

36
Q

Cranial nerve VIII name

A

Vestibulocochlear

37
Q

Cranial nerve V name

A

Trigeminal

38
Q

Cranial nerve X name

A

Vagus

39
Q

Cranial nerve IX name

A

Glossopharyngeal

40
Q

Cranial nerve VI name

A

Abducens

41
Q

Cranial nerve XII name

A

Hypoglossal

42
Q

Cranial nerve XI name

A

Accessory

43
Q

Big bulge on one of roots by spinal cord is called.

A

Posterior root ganglion

44
Q

Optic nerve picture 5 structures are?

A 
Eyeballs 
Optic nerve 
Optic chiasm 
Optic optic tract 
Pituitary gland
45
Q

Structures in picture of oculomotor cranial nerve are?

A 
Oculomotor nerve 
Superior rectus 
Medial rectus 
Inferior rectus 
Inferior oblique 
Optic nerve 
Sphincter pupillae (para)
Ciliary muscles (para)
46
Q

Structure that allows pupil to change in size.

A

Sphincter pupillae

47
Q

Area that accommodate the lens by making it more spherical.

A

Sphincter pupillae

48
Q

Names, passageway, and functions of CN V 1, 2 and 3

A

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
Q

The lumbosacral plexus is the______ nerve and starts and ends at which vertebraes?

A

Sciatic nerve

L4-S4

50
Q

The arm plexus is the______ plexus and starts and ends at which vertebraes?

A

Brachial plexus

C5-T1

51
Q

The anterior ramus’ branch out into what?

A

Nerve Plexus

52
Q

What is the name of the plexus by the arm?

A

Brachial plexus

53
Q

What are the spinal vertebra associates with brachial plexus?

A

C5-T1

54
Q

What is the nerve plexus by leg?

A

Lumbosacral or sciatic nerve

55
Q

Which nerve innervates the anterior 2/3rds of tongue?

A

Facial nerve

56
Q

Which nerve innervates the posterior 1/3rd of tongue?

A

Glossopharyngeal nerve

57
Q

Where does the vestibulocochlear nerve travel to?

A

Between pons and medulla oblongata

58
Q

What muscle does glossopharyngeal innervate?

A

Stylopharyngeus muscle

59
Q

Facial nerve innervates submandibular, sublingual, and lacrimal glands. Which gland does glossopharyngeal innervate?

A

Parotid gland

60
Q

Why is vagus special sensory?

A

Taste on epiglottis

61
Q

Why is vagus somatic motor?

A

Muscles of pharynx

62
Q

What muscles do the accessory N. Innervate?

A

Trapezius

Sternocleidomastoid

63
Q

What does glossal mean?

A

Tongue

64
Q

Contraction of sphincter pupillae results in…

A

Pupillary constriction

65
Q

What are the 4 things that happen with parasympathetic innervation?

A

Heart rate decreases
Digestive secretions promoted
Peristalsis
Construction of pupils

66
Q

How does cn. VII help with parasympathetic?

A

Saliva production

67
Q

How does cn. IX help with parasympathetic?

A

Saliva production

68
Q

Vagus nerve s part in parasympathetic.

A

Decrease heartrate
Promote digestive secretions
Peristalsis

BIO 2300 Unit 2 (9 decks)

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