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53 Cards in this Set

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What is the spinal cord segment for the Musculocutaneous nerve?

C5, C6 (also C7, but not listed in little book)

what muscles does the musculocutaneous nerve innervate?

coracobrachialis


biceps brachii


brachialis

What is the sensory distribution of the musculocutaneous nerve?

anterolateral surface of the forearm


(green in the pic on the forearm) 

anterolateral surface of the forearm


(green in the pic on the forearm)

what are the features of musculocutaneous peripheral nerve paralysis?

loss of elbow flexion when supinated


weakened supination

What are the spinal cord segments for the Axillary nerve?

C5, C6

What muscles does the axillary nerve innervate?

deltoid and teres minor

What is the sensory distribution supplied by the axillary nerve?

lateral arm over lower portion of deltoid


(orange in the pic) 

lateral arm over lower portion of deltoid


(orange in the pic)

what are the motor features of axillary nerve paralysis

loss of shoulder abduction


weakened shoulder ER

What are the spinal cord segments for the Radial nerve?

C5, C6, C7, C8, T1 (T1 has inconsistent contribution. *Note little book does not say C5)

What muscles does the radial nerve innervate?

triceps, anconeus, brachioradialis, supinator,


wrist, finger and thumb extensors

what is the sensory distribution of the Radial nerve?

posterior arm, forearm and radial side of hand and digits 1-3 up to DIP and radially half of 4th up to DIP


(pink in the pic) 

posterior arm, forearm and radial side of hand and digits 1-3 up to DIP and radially half of 4th up to DIP


(pink in the pic)

what are the motor features of radial nerve paraysis?

loss of elbow, wrist, finger, and thumb extension (every mm with extensor word in it. & Abductor Pollicis longus)

What are the spinal cord segments of the Median nerve?

C5, C6, C7, C8, T1 (T1 has inconsistent contribution. *Note little book does not say C5)

what muscles are innervated by the median nerve?

pronators, wrist and finger flexors on radial side, most of thumb muscles


-FCR


-PT


-PL


-FDS


-FPL


-FDP (of digits 2 and 3)


-PQ


-APB


-OP


-FPB


-Lumbricals 1 & 2

what is the sensory distribution of the median nerve?

palmar aspects of the thumb-3rd digit


and radial half of palmar aspect of the 4th digit


and Distal tips of digits 1-3 and radial half of distal tip of 4th digit


(lavender in the pic) 

palmar aspects of the thumb-3rd digit


and radial half of palmar aspect of the 4th digit


and Distal tips of digits 1-3 and radial half of distal tip of 4th digit


(lavender in the pic)

what are the motor features of median nerve paralysis?

loss of forearm pronation


thumb opposition


thumb flexion and abduction


(lateral pinch instead of pad-to-pad)


Carpal tunnel syndrome


thenar eminence atrophy

what spinal cord segments does the ulnar nerve arise from?

C8-T1

What muscles are innervated by the ulnar nerve?

FCU


FDP (4&5)


Dorsal and Palmar Interossei


lumbricals of 4 and 5


Adductor Pollicis


ADM


ODM


FDMB


what is the sensory distribution of the ulnar nerve?

medial half of the palmar and dorsal surfaces of the 4th digit


5th digit


medial palmar and dorsal surfaces of hand (purple in the pic)

medial half of the palmar and dorsal surfaces of the 4th digit


5th digit


medial palmar and dorsal surfaces of hand (purple in the pic)

What are motor features of ulnar nerve paralysis?

loss of wrist ulnar deviation


weakened wrist and finger flexion


weakened fourth and 5th DIP flexion


loss of thumb adduction


loss of most intrinsic hand muscles (claw hand)

What are the spinal cord segments of the sciatic nerve?

L4-S3

what muscles does the sciatic nerve innervate?

Hamstrings


Adductor Magnus

what is the sensory distribution of the sciatic nerve?

posterior/lateral calf, ankle and heel

posterior/lateral calf, ankle and heel (pink in pic)

what are the motor features of sciatic nerve paralysis?

loss of knee flexion


weak hip adduction


loss of all muscle function below the knee

What are the spinal cord segments of the femoral nerve?

L2, 3, 4

What are the muscles innervated by the femoral nerve?

sartorius


quadriceps


iliacus


pectineus

what is the sensory distribution of the femoral nerve?

middle anterior thigh and anterior medial leg and medial calf distal to knee (see pg. 538 of Netters) (dark orange in pic)

middle anterior thigh and anterior medial leg and medial calf distal to knee (see pg. 538 of Netters) (dark orange in pic)

what are the motor features of paralysis for the femoral nerve?

loss of hip flexion and knee ext

what are the cord segments of the tibial nerve?

L4-S3


what are the muscles innervated by the tibial nerve?

gastrocnemius


soleus (superificial posterior compartment)


plantaris


popliteus


tibialis posterior


FDL


FHL (i.e. deep posterior compartment)

what is the sensory distribution of the tibial nerve?

posterior/lateral calf, ankle and heel


tibial nn. specifically: plantar surface of foot (except margins of posterior medial and lateral side)


& posterior distal heel pg. 540 of netter's

posterior/lateral calf, ankle and heel


tibial nn. specifically: plantar surface of foot (except margins of posterior medial and lateral side)


& posterior distal heel pg. 540 of netter's

What are the motor features of tibial nerve paralysis?

loss of PF and supination

What are the cord segments of the superficial peroneal (fibular) nerve?

L5-S2

what muscles are innervated by the superficial peroneal nerve?

peroneus longus and brevis

what is the sensory distribution of the superficial peroneal nerve?

anterior/medial distal lower leg and ankle


most of dorsum of foot except web space between 1st and 2nd digit and lateral border of the 5th metatarsal (sural nn)

anterior/medial distal lower leg and ankle


most of dorsum of foot except web space between 1st and 2nd digit and lateral border of the 5th metatarsal (sural nn)

what are motor features of superificial peroneal nerve paralysis?

loss of eversion

What are the the cord segments of the deep peroneal nerve?

L4-S2

what muscles are innervated by the deep peroneal nerve?

tibialis anterior


EHL


EDL


peroneus tertius


1st and 2nd dorsal interossei


EDB


EHB

What is the sensory distribution of the deep peroneal nerve?

web space between first and 2nd toes on dorsum of foot

web space between first and 2nd toes on dorsum of foot

what are motor features of paralysis of the deep peroneal nerve?

loss of DF (drop foot)


weakness in the foot intrinsics

Name the cranial nerves.

Olfactory CN I


Optic CN II


Oculomotor CN III


Trochlear CN IV


Trigeminal CN V


Abducens CN VI


Facial VII


Vestibulocochlear VIII


Glossopharyngeal IX


Vagus X


Spinal Accessory XI


Hypoglossal XII

What is the function of CN I? and what does damage cause?

function: smell


damage: ANOSMIA (loss of sense of smell)


What is the function of Optic nerve (CN II)? and what does damage cause?

function: sight/vision, PUPILLARY REFLEXES


damage: MONOCULAR blindness, LOSS of pupillary CONSTRICTION, absence of BLINK REFLEX

What is the function of Oculomotor CN III? and what does damage cause?

function: moves the eye and elevates the UPPER EYELID


damage: PTOSIS (drooping eyelid)


DILATION of pupil/loss of accomodation of the LIGHT reflex

What is the function of the Trochlear CN IV? and what does damage cause?

function: innervates the SUPERIOR OBLIQUE MM (moves eye out and down)


damage: diplopia, FAILURE TO ROTATE EYE UP AND OUT (head tilt up and inclined to the opposite side)

What is the function of Trigeminal CN V? and what does damage cause?

Function: motor innervation of mm of MASTICATION and sensory nerve for the head


damage: loss of FACIAL SENSATION, weakness of mm of mastication, deviation of opened jaw to IPSILATERAL side


What is the function of Abducens CN Vi? and what does damage cause?

Function: abducts the eye via nerve supply to LATERAL RECTUS MM


Damage: diplopia, convergent squint (MEDIAL STRABISMUS), abductor paralysis of IPSILATERAL  eye

Function: abducts the eye via nerve supply to LATERAL RECTUS MM


Damage: diplopia, convergent squint (MEDIAL STRABISMUS), abductor paralysis of IPSILATERAL eye

What is the function of Facial nerve (CN VII)? and what does damage cause?

Function: facial expression, speech ARTICULATION , winking,INGESTION of food and drink, taste, salivary and nasal SECRETIONS


Damage: IPSAILATERAL facial PARALYSIS


loss of TASTE on anterior 2/3 of tongue (BELL'S Palsy)

What is the function of Vestibulocochlear CN VIII? and what does damage cause?

Function: maintenance of equilibrium and hearing


Damage: vertigo, nystagmus, dysequilibrium, tinnitus, loss of hearing

What is the function of Glossopharyngeal CN IX? and what does damage cause?

Function: taste, ELEVATES PHARYNX, SALIVARY SECRETIONS (testing: say 'ahh' and watch for symmetrical elevation)


Damage: slight DYSPHAGIA, partial moduth, loss of taste on posterior 1/3 of tongue

What is the function of Vagus CN X? and what does damage cause?

Function: phonation, visceral sensations and reflexes, cardiac depressor, bronconstrictor, GI tract peristalis and secretion


Damage:


palpitation,


tachycardia,


vomiting


slowing of respiration


UMN: uvula deviates toward lesion; ipsilat paralysis of soft palate and larynx


LMN: uvula deviates contralat to lesion


hoarseness


anesthesia of larynx

What is the function of Accessory CN XI? and what does damage cause?

Function: swallowing (deglutition) and phonation


movements of head and neck (SCM and Trapes)


Damage: weakness in shrugging ipsilat shoulder and turning head to contralat side

What is the function of Hypoglossal CN XII? and what does damage cause?

Function: movements of tongue


Damage: unilat paralysis of tongue


LMN (nuclear or peripheral lesion) deviation to the ipsilat side during protrusion


UMN: tongue deviates contralat to side of lesion