Neuroanatomy/physio/pharm Flashcards

(59 cards)

1
Q

Radial nerve root

A

C5-T1

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2
Q

Median nerve root

A

C6- T1

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3
Q

Lateral cutaneous thigh nerve root

A

L2,3

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4
Q

Nerve root supply of deep tendon reflexes

A

S1,s2- ankle jerk- tibial
L3,L4- knee jerk- femoral
C5, C6- bicep and brachioradialis jerk
C7, C8 - triceps

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5
Q

What nerve root abducts shoulder and what muscle involved

A

C5 deltoid

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6
Q

Adduction of shoulder: nerve root and muscles

A

C7 pec major and lat dorsi

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7
Q

Finger flexion- nerves

A

C8, digit flexors

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8
Q

Extension of fingers: muscle and nerve root

A

Digit extensors and c7

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9
Q

Abduction of finger joints- muscle and nerve root

A

Dorsal interossei, T1

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10
Q

Adduction of fingers- muscle and nerve root/ nerve

A

Palmar interossei and T1- ulnar

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11
Q

Elbow joint flexion- muscle and nerve root

A

Biceps brachii, C5, C6

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12
Q

Extension of elbow joint- muscle and nerve roots

A

Triceps brachii and c7,c8

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13
Q

Wrist joint flexion: muscle wnd nerve root

A

Carpal flexors, c6, C7

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14
Q

Wrist joint extension, muscle and nerve roots

A

Carpal extensors and C6, C7

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15
Q

Hip joint flexion- muscle and nerve root

A

Psoas major and L2,L3

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16
Q

Hip joint extension- muscle and nerve root

A

Glut max and hamstrings- L5,S1

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17
Q

Knee joint- flexion and nerve roots

A

Hamstrings- L5,s1

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18
Q

Knee hoint extension- muscle and nerve root

A

Quadriceps- L3, L4

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19
Q

Ankle joint dorsiflexion- muscle and nerve root

A

Tibialis anterior- L4,L5

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20
Q

Ankle- plantar flexion- muscle and nerve root

A

Gastrocnemius/soleus, S1,s2

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21
Q

Ankle joint inversion- muscle and nerve root

A

Tibialis anterior and posterior (L4- S3)

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22
Q

Eversion of ankle joint musclle and nerve root

A

L5, S1- fibularis longus and brevis

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23
Q

Cranial nerves- names

A

I olfactory
II optic
III oculomotor
IV trochlear
V trigeminal
VI abducens
VII facial
VIII Vestibulocochlear
IX Glosspharyngeal
X Vagus
XI Accessory
XII Hypoglossal

Oh
Oh
Oh
To
Touch
And
Feel
A
Girls
Vagina
And
Hymen

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24
Q

cranial nerves: motor, sensory, both?

A

Some say marry money but my brother says big brains matter more
S: sensory (olfactory nerve - CN I)
S: sensory (optic nerve - CN II)
M: motor (oculomotor nerve - CN III)
M: motor (trochlear nerve - CN IV)
B: both (trigeminal nerve - CN V)
M: motor (abducens nerve - CN VI)
B: both (facial nerve - CN VII)
S: sensory (vestibulocochlear nerve - CN VIII)
B: both (glossopharyngeal nerve CN IX)
B: both (vagus nerve - CN X)
M: motor (spinal accessory nerve - CN XI)
M: motor (hypoglossal nerve - CN XII)

25
Where does olfactory nerve arise from and insert into
Arises forebrain. Bipolar nerve through cribiform plate. Inserts directly onto inferior surface of temporal lobe
26
Route of optic nerve
Arises forebrain. Passes through optic canal. Optic tract> chiasm> lateral geniculate nucleus> optic radiation> visual cortex
27
What is meyers loop and where does it end
Part of optic radiation. Optic radiation splits into two, one pathway travelling through parietal lobe (for inferior visual field) and one passing through temporal lobe. The one that passes through temporal lobe is for superior field vision- meyers loop End in calcarine sulcus
28
What do rods allow for (retina)
Allow us to see in dim light but dont allow for the perception of colout
29
What do cones allow for retina
Perceive colour under normal lighting conditions
30
What area of the retina has the highest acuity vision
Fovea- has no rods but many cones
31
Occulomotor nerve- where it arises and journey
Arises midbrain Masses through superior orbital fissure
32
What is the einger westphal nucleus
EW nucleus is a preganglionic parasympathetic nucleus involved in light reflex- sphincter pupillae, ciliary muscle)
33
Trochlear nerve journey
Arises midbrain, loops around periaquedtucal grey and therefore crosses sides. (Exits posteriorly) Passes through superior orbital fissuri nerve contralateral to nucleus
34
Where does trigeminal nerve arise. Group of muscles it innervates.
Arises from pons Muscles of mastication (innervates other things too) Tensor tympani (dulls noise)
35
The sensory nuclei of trigeminal
Mesencephalic- propioception from chewing Pontine/primary trigeminal nucleusa- decriminitave touch/vibration Spinal nucleus (pain, temperature)
36
Where does abducens arise
Pontomedullary junction
37
Facial nerve journey
Arises pontomedullary junction. Passes through internal acoustic meatus and then stylomastoid foramen.
38
What are the different branches of facual nerve for and their related nucleus
motor nucleus- muscle facial expressions, stapedius solitary nucleus- anterior 2/3ds of tongue salivatory nucleus- salivary and lacrimal glands (parasympathetic)
39
where does the vestibulocochlear nerve arise and what does it pass through
pontomedullary junctionpasses through internal acoustic meatus
40
what tract allows for conjugate eye movement and what side is affected is say the left eye is not adducting
medial lateral fasiculatas. found in brainstem. connects abducens and occulomotor nerve which allows for conjugate eye movements left MLF (also connect trochlear and vestibulocochlear)
41
how does MS cause supranuclear opthalmoplegia
MLF is a white tract. therefore at risk of demyelinating conditions such as MS (although toher things can affect mlf eg plaques) If MLF has a lesion then one of the outcomes is abducens and occulomotor nerve are no longer connected.
42
if there was a MLF lesion on the right side what would be the sypmtoms
ipsilateral loss of adduction with nystagmus of abducting eye. therefore right eye loss of adduction (when moving something in front of left eye) and nystagmus of left eye
43
journey of glossopharyngeal nerve and its components
arises from medulla, passes through jugular foramen. sensory- posterior 1/3rd of tongue parasymp- supplies parotid motor- stylopharyngeus
44
vagus- sensory supply
visceral sensation: heart, lungs, digestive system. skin of larynx etc
45
how is vagus clinically tested
elevation of soft palate, normal swallow and speech
46
What are merkel discs for
Small and densley packed in fibgertips for fine touch and pressure eg. Sense texture Unencapsulated Slowly adapted
47
What do pacinian corpuscles sense
High frequency vibrating stimuli
48
What are meissners corpuscles sensitive to
Light pressure This and pacinian are rapidly adapting receptors
49
Alpha a (1) fibres for
Propioreceptors of skeletal muscle. Thick myelination, fast conduction
50
a beta (II) fibres for
Mechanoreceptors of skin. Moderate myelination
51
A delta (III) fibres for...
Pain and temperature, short stabbing pain- thin myelination, fast conduction
52
C (IV) fibres for
Non specific (location wise), throbbing burning pain, itch (chemical) Unmyelinated, slow conduction, high threshold
53
Ulnar nerve root
C8-T1
54
Most commonly sprained ankle joint and where would the swelling be
The anterior talofibular is the ankle ligament most likely to be sprained. The pain/swelling would be anterior to the lateral malleolus
55
What innervates first web space
Deep fibular nerve
56
What tibia supply
Posterior compartment of leg
57
extra pyramidal tracts: tecticulospinal tract function
reflex to auditory and visual stimulation. cell bodies in superior colliculus. axons descend close to midline C spine
58
extrapyramidal tracts: rubrospinal
exerts control over limb flexors
59
reticulospinal tract function
medial (the pontine)- antigravity, contracts extensors: maintains standing position lateral (medullary)- opposes lateral tract. releases antigravity muscles from reflex control