Nerves Flashcards
How many pairs of cervical nerves?
8
Where do the cervical nerves emerge from?
Cranial to vertebrae as same number of nerve except
8th nerve passes between C7&T1
1st which passes thru lateral vertebral foramen in arch of atlas
Where does spinal cord end?
L6-7
What is primary sign of compromise in lumbosacral region?
Pain
Nerves of forelimb
SSMARMU
Suprascapular, subscapular, musculocutaneous, axillary, radial, median, ulnar
Brachial plexus nerve complex consists of
Suprascapular nerve, subscapular nerve, musculocutaneus nerve
What spinal segments does suprascapular nerve represent?
C(5), C6, C7
What muscles does suprascapular nerve innervate.
Supraspinatpus, infraspinatous
Which nerve roots does the subscapular nerve come from?
C6, 7
Which mmm does the subscapular innervate
Subscapularisis
Which segments does the musculocutaneous nerve come from?
C6,7,8
Which my does musculocutaneous nerve innervate?
Biceps brachi, brachial is
What segments does Axillary nerve evaluate?
C(6), 7, 8
What muscles does axillary nerve innervate?
Deltoideus, Teres major and minor, (subscapularis)
What segments does Radial nerve tell us?
C7,8,T1,(2)
What mm are affected by radial nerve?
Triceps brachii
Extensor carpi radialis, ulnaris lateralis, common digital extensor, lateral digital extensor
What segments for Median nerve?
C8, T1, (2)
What mm does the Median nerve innervate?
Flexor carpi radialis, superficial digital flexor, (deep digital flexor)
What segments does ulnar nerve tell us?
C8, T1, (2)
What mm does the ulnar nerve innervate?
Flexor carpi ulnaris, deep digital flexor
What are the nerves of the rear limb?
Femoral, obturator, cranial gluteal, caudal gluteal, sciatic, pudendal
What segments does Femoral nerve tell us about and what reflex tests it?
L 4,5,6
Patellar reflex
What mm does the femoral nerve innervate?
Iliopsoas, Quadriceps, Sartorius
What segments for Obturator nerve?
(L4), 5,6
What mm does Obturator nerve innervate?
External Obturator,Pectinous, Gracilis, Adductor
What segments for Cranial Gluteal nerve?
L6,7,S1
What muscles for cranial gluteal nerve?
Middle gluteal, Deep gluteal, Tensor fascia lata
What segments for caudal gluteal nerve?
L7, (S1,2)
What muscles for caudal gluteal?
Superficial and middle gluteal
What segments and what reflex for the sciatic nerve?
L6,7 S1,(2’
Flexor reflex
What mm for sciatic nerve?
Biceps femoris, semimebranosus, semitenkinsis
What mm for Common Peroneal nerve?
Peroneus longus, Lateral Digital Extensor, Long Digital Extensor
What mm for Tibial nerve?
Gastrocnemius, Popliteus, Superficial Digital Flexor, Deep Digital Flexor
What segments and what reflex for the Pudendal nerve?
S1,2,3 Perineal Reflex
What mm for Pudendal nerve?
Caudal Rectal, External Anal Sphincter
What type of response do you see with an Upper Motor Neuron lesion?
Spastic lesion/response
What type of response do you see from a Lower Motor Neuron lesion?
Flaccid lesion/response
What type of lesion occurs with injury at C1-C5?
UMN to all 4 limbs
What type of lesion occurs with injury to C6-T2?
LMN thoracic limbs UMN pelvic limbs
What type of lesion occurs with injury to T3-L3
UMN to pelvic limbs
Where in the spinal cord is the lesion that causes Schiff Sherrington posture?
T3-L7
What response occurs with lesion at L4-L6?
LMN w/ patellar reflex (hypoflexion) UMN w/ sciatic reflex
What response is seen with lesion to L7-S3?
LMN to Sciatic
Where does 80% of IVDD occur?
T11 and L3
What happens with Type I disk dz?
Rupture of disk with spinal cord damage
What happens with Type II disk dz?
Protrusion of the disk
What segments does the Forelimb flexor reflex check?
C6-T2
What segments does the Triceps Reflex check?
C7 to T1
True or False The Triceps Reflex is very reliable
False May not be elicited in normal animals
What segments does the Biceps Reflex test?
C6-7 and musculocutaneous nerve
True or False The Biceps reflex is very trustworthy?
False May not be present in normal animals
What does the Cutaneous Trunci reflex test?
Segments C8-T1 and lateral thoracic nerve
