Nerve origins and reflexes

Question 1

Femoral nerve

Answer 1

L4-L5-L6
Iliopsoas, quadriceps, sartorius

Question 2

Obturator nerve

Answer 2

(L4) - L5 - L6
External obturator, pectineus, gracilis, adductor

Question 3

Cranial gluteal nerve

Answer 3

L6-L7-S1
Middle gluteal, deep gluteal, tensor fascia lata

Question 4

Caudal gluteal nerve

Answer 4

L7 - (S1 - S2)
Superficial gluteal, (middle gluteal)

Question 5

Sciatic nerve

Answer 5

L6-L7-S1-(S2)
Biceps femoris, semimembranosus, semitendinosus

Question 6

Common fibular nerve

Answer 6

Branch of sciatic
fibularis longus, lateral digital extensor, long digital extensor, cranial tibial

Question 7

Tibial nerve

Answer 7

Branch of sciatic
Gastrocnemius, popliteus, superficial digital flexor, deep digital flexor

Question 8

Pudendal nerve

Answer 8

S1 - S2 - S3

Question 9

Pelvic limb flexor reflex (withdrawal)

Answer 9

Sciatic nerve
Sensory and motor
(except for hip flexion, which is iliopsoas, innervated by femoral nerve)

Question 10

Patellar reflex

Answer 10

Femoral nerve
Sensory and motor

Question 11

Perineal reflex

Answer 11

Pudendal nerve
Sensory and motor

Question 12

Gastrocnemius reflex

Answer 12

Tibial nerve branch of sciatic nerve

Question 13

Cranial tibial reflex

Answer 13

Fibular nerve branch of sciatic nerve

Question 14

Biceps reflex

Answer 14

Musculocutaneous nerve
Sensory and motor

Question 15

Triceps reflex

Answer 15

Radial nerve
sensory and motor

Question 16

Extensor carpi radialis reflex

Answer 16

Radial nerve (deep branch)

Question 17

Cutaneous trunci reflex

Answer 17

Lateral thoracic nerve (motor)

Question 18

Suprascapular nerve

Answer 18

(C5) - C6 - C7
supraspinatus, infraspinatus

Question 19

Subscapular nerve

Answer 19

C6-C7
Subscapularis

Question 20

Musculocutaneous nerve

Answer 20

C6-C7-C8
Biceps brachii
Brachialis
Coracobrachialis

Question 21

Axillary Nerve

Answer 21

(C6)-C7-C8
Deltoideus, Teres major, Teres minor, (Subscapularis)

Question 22

Radial Nerve

Answer 22

C7-C8-T1-(T2)
Triceps brachii, extensor carpi radialis, ulnaris lateralis, common digital extensor, lateral digital extensor

Question 23

Median nerve

Answer 23

C8-T1
Flexor carpi radialis, superficial digital flexor, (deep digital flexor)

Question 24

Ulnar nerve

Answer 24

C8-T1-(T2)
Flexor carpi ulnaris, Deep digital flexor

Question 25

Thoracic limb flexor reflex (withdrawal)

Answer 25

Sensory varies with area stimulated Motor: musculocutaneous, axillary, median, ulnar, radial