exam 3 nerves Flashcards
(75 cards)
1
Q
name of CN I
A
olfactory
2
Q
name of CN II
A
optic
3
Q
name of CN III
A
oculomotor
4
Q
name of CN IV
A
trochlear
5
Q
name of CN V
A
trigeminal
6
Q
name of CN VI
A
abducens
7
Q
name of CN VII
A
facial
8
Q
name of CN VIII
A
vestibulocochlear
9
Q
name of CN IX
A
glossopharyngeal
10
Q
name of CN X
A
vagus
11
Q
name of CN XI
A
accessory
12
Q
name of CN XII
A
hypoglossal
13
Q
which nerves are sensory only
A
I, II, VIII
14
Q
which nerves are motor only
A
III, IV, VI, XI, XII
15
Q
which nerves are mixed
A
V, VII, IX, X
16
Q
location of olfactory nerve
A
axons from olfactory bulb
17
Q
function of olfactory nerve
A
smell, from breathing in nose, goes through cribriform plate of ethmoid bone
18
Q
location of optic nerve
A
spans from the optic chiasm to eyeball, specifically connects to blind spot in eye
19
Q
function of optic nerve
A
sight, take photoreceptors to brain, travels through optic canal of spheniod bone
20
Q
location of vestibulocochlear nerve
A
connects ear to brain
21
Q
function of vestibulocochlear nerve
A
collects info about equilibrium and controls hearing and balance
22
Q
location of oculomotor nerve
A
travels through superior orbital fissure of the sphenoid bone
23
Q
function of oculomotor nerve
A
moves the eye, constricts pupil, adjusts lens
- connects to iris and ciliary body
- moves superior, medial, and inferior rectus, and inferior oblique
24
Q
function of trochlear nerve
A
moves superior oblique muscles, inferior and lateral
25
location of abducens
moves lateral rectus, abducts eye
26
function of accessory nerve
attaches trapezius and sternocleidomastoid
27
function of hypoglossal nerve
attaches to several muscles of tongue
28
function of trigeminal nerve
3 branches of nerves that are the muscles of mastication (temporalis, masseter, pterygoid)
29
what are the 3 branches of the trigeminal nerve
V1: ophthalmic
V2: maxillary
V3: mandibular (motor paart)
30
function of facial nerve
muscles of facial expression
- provides sensory innervation to anterior tongue and glands
- taste sensation 2/3 anterior tongue
31
location of facial nerve
junction of pons/medulla through parotid gland to facee
32
location of glossopharyngeal nerve
lateral medulla to pharynx/neck
33
function of glossopharyngeal nerve
sensory to throat
- motor to 1 little nerve
- innervates parotid gland to produce saliva to produce saliva
- innervates carotid body to detect blood pressure
- sensory to posterior 1/3 tongue
- DETERMINES texture
34
function of vagus nerve
sensory and motor to smooth muscle, cardiac muscle, and glands in thorax and abdomen
" the wonderer"
35
what nerve senses a piece of food in throat?
glossopharyngeal (IX)
36
what nerve causes muscles to respond?
vagus (X)
37
how many pairs of spinal nerves are there
31
38
how many cervical nerves are there? and what is the location?
8
| C1-C8
39
how many thoracic nerves are there? and what is the location?
12
| T1-T12
40
how many lumbar nerves are there? and what is the location?
5
| L1-L5
41
how many sacral nerves are there? and what is the location?
5
| S1-S5
42
how many coccygeal nerves are there? and what is the location?
1
| Coc 1
43
which nerve system are spinal nerves located
PNS but connected to CNS
44
what are the major differences between spinal and cranial nerves
- spinal nerve connected to spinal cord, not brain
- arabic numbers, not roman
- generally longer
45
anterior root contains what kind of axons
motor neuron axons
46
posterior root contains what kind of axons
sensory neuron axons
47
spinal nerve contains what kind of axons
motor and sensory axons
48
function of posterior primary ramus
takes sensory and motor info to the back (of body)
49
function of anterior primary ramus
takes sensory and motor info to the rest of the body
50
dermatomes
single spinal nerve sensory innervation
51
nerve plexus
a network of converging and/or diverging axon
- usually from anterior primary rami
- thoracic nerves don't form plexus bc of ribs
52
location of cervical plexus
anterior rami of C1-C5 spinal nerves
53
function of cervical plexus
- sensory: skin of neck, ear & shoulders
| - motor: anterior neck muscles
54
location of phrenic nerve
down through thorax
| C3, C4, C5
55
function of phrenic nerve
supplies diaphragm
| helps assist breathing, life or death
56
brachial plexus lcoation
anterior rami of C5-T1 spinal nerves
57
function of brachial plexus
innervates motor and sensory of upper limb
58
nerves of the brachial plexus
```
axillary
musculocutaneous
radial
median
ulnar
```
59
function of axillary nerve
sensory: lateral shoulder
motor: deltoid and teres major
60
location of axillary nerve
posterior of humerous
61
function of musculocutaneous nerve
sensory: lateral forearm
motor: most muscles on anterior surface arm
- coracobrachialis
- biceps brachii
- brachialis
62
function of radial nerve
sensory: posterior arm, forearm, hand
motor: posterior arm and forearm
63
function of median nerve
sensory: lateral palm of hand
motor: most anterior forearm muscles, thenar, lumbricals of fingers 2 and 3
64
function of ulnar nerve
sensory: medial hand
motor:
anterior forearm
- medial 1/2 flexor digitorum profundus
- flexor carpi ulnaris
hand
- hypothenar
- lumbricals 4 and 5
- interossei
65
location of lumbar plexus
anterior rami of L1-L4 spinal nerves
66
function of lumbar plexus
innervates inferior abdominal wall and part of lower limb
67
nerves of lumbar plexus
femoral and obturator
68
function of femoral nerve
sensory: anterior thigh
motor: anterior thigh, extend knee
69
function of obturator nerve
sensory: medial thigh
motor: medial thigh (abductor)
70
location of sacral plexus
anterior rami of L4, L5, and S1, S2, S3 spinal nerves
71
function of sacral plexus
innervates buttocks, pelvic structures and majority of lower limb
72
nerves of sacral plexus
sciatic
tibial
common fibular
73
function of sciatic nerve
splits into tibial and common fibular nerve
74
function of tibial nerve
sensory: posterior leg/sole of foot
motor: muscles of most posterior thigh, posterior leg, sole of foot
75
function of common fibular nerve
sensory: anterior and lateral leg, dorsum of leg
motor: muscles of anterior and lateral leg, dorsum of foot
