random stuff2

Question 1

the lumbosacral plexus consists of the intermingling of primary branches of spinal nerves ___ thru ___

Answer 1

L4-S4

Question 2

femoral n. spinal nerve origin

Answer 2

L4-L6

Question 3

obturator n. spinal nerve origin

Answer 3

L4-L6

Question 4

sciatic n. spinal nerve origin

Answer 4

L6-S2

Question 5

pudendal n. spinal nerve origin

Answer 5

S2 - S4

Question 6

the femoral nerve has a cutaneous branch named the ______ nerve

Answer 6

saphenous

Question 7

the sciatic nerve branches into 2 nerves:

Answer 7

tibial and common peroneal

Question 8

the common peroneal n branches into 2 nerves:

Answer 8

superficial and deep peroneal

Question 9

the deep peroneal n branches into the ____ nerve distally

Answer 9

lateral dorsal metatarsal n.

Question 10

name the 3 branches of the tibial nerve

Answer 10

caudal cutaneous sural n (runs with lateral saphenous v.), medial and lateral plantar nerves (on the medial side)

Question 11

femoral nerve innervates:

Answer 11

flexors of the hip (iliopsoas, rectus femoris) and the extensors of the stifle (quadriceps femoris)

Question 12

the cutaneous saphenous nerve innervates:

Answer 12

the skin of the medial thigh, medial crus, dorsomedial skin of the tarsus and metatarsus

Question 13

clinical signs of femoral nerve laceration:

Answer 13

inability to support weight due to paralysis of quadriceps femoris, analgesia over the medial crural region

Question 14

obturator nerve innervates:

Answer 14

adductors of the hip (pectineus, adductor, graciclis, external obturator) PAGE

Question 15

T/F: the obturator nerve has a cutaneous portion

Answer 15

False

Question 16

cranial gluteal nerve innervates:

Answer 16

abductors of the hip and the tensor fasciae latae m.

Question 17

T/F: the cranial gluteal nerve has a cutaneous portion

Answer 17

False

Question 18

what joint does the cranial gluteal nerve innervate?

Answer 18

hip joint

Question 19

clinical signs of cranial gluteal nerve laceration

Answer 19

atrophy of gluteus medius

Question 20

caudal gluteal nerve innervates:

Answer 20

extensors of the hip (gluteus medius, biceps femoris, semitendinosus), and the abductors of the hip

Question 21

sciatic nerve innervates:

Answer 21

most of the hindlimb muscles either directly or via its tibial and common peroneal divisions. these muscles include the flexors of the stifle (biceps femoris (caudal division), semitendinosus, popliteus, gastrocnemius), extensors and flexors of the tarsus, and extensors and flexors of the digit

Question 22

is the sciatic nerve a mixed nerve?

Answer 22

YES! it has cutaneous innervation (almost all the skin from the stifle down to the hoof) - the saphenous nerve (from the femoral nerve) innervates the medial strip of the leg

Question 23

the tibial nerve is the cranial or caudal division of the sciatic nerve?

Answer 23

caudal - passes in between the gastrocnemius muscles

Question 24

when does the tibial nerve give off the caudal cutaneous sural nerve?

Answer 24

right before it dives between the gastroc muscles

Question 25

what does the tibial nerve innervate?

Answer 25

flexors of the stifle (poplitus, gastrocnemius), extensors of the tarsus (gastrocnemius, soleus, superficial and deep digital flexors), and flexors of the digit (superficial and deep digital flexors)

Question 26

tibial nerve skin innervation:

Answer 26

caudolateral skin from stifle to hoof

Question 27

tibial nerve joint innervation:

Answer 27

stifle joint, plantar aspects of fetlock, pastern and coffin joints, and the navicular bursa

Question 28

clinical signs of a tibial nerve laceration:

Answer 28

hypermetric gait with "dropped hock" (yperflexsion of tarsus at rest), inability to flex digit, analgesia of plantar metatrsus and digit

Question 29

is the common peroneal nerve the cranial or caudal division of the sciatic nerve?

Answer 29

cranial

Question 30

what are the 3 branches of the common peroneal nerve?

Answer 30

lateral cutaneous sural n. , superficial and deep peroneal n.

Question 31

common peroneal innervation:

Answer 31

flexors of the tarsus (long and lateral digital extensors, tibialis cranialis) and the extensors of the digit (long and lateral digital extensors)

Question 32

lateral cutaneous sural nerve innervation:

Answer 32

skin of the dorsolateral suface of the crus and pes, tarsal joints, fetlock joint, and dorsal portions of pastern and coffin joints

Question 33

clinical signs of common peroneal nerve laceration:

Answer 33

inability to flex the tarsus and extend the digit, the animal shows hyperextension of the hock and hyperflexion of the digit, fetlock knuckles during walking, and the toe is dragged. analgesia of the dorsolateral pes from the tarsus to the fetlock

Question 34

tarsal joint innervation:

Answer 34

deep peroneal nerve

Question 35

fetlock joint innervation:

Answer 35

medial and lateral dorsal metatarsal nerves, medial and lateral plantar nerves

Question 36

pastern and coffin joint innervation:

Answer 36

plantar aspect by the medial and lateral plantar digital nerves (from tibial distribution) and the dorsal aspect by the medial and lateral dorsal digital nerves (distal branches of the dorsal metatarsal nerves - peroneal distribution)