Bryan - Gross Anatomy - Nerves Of The Pelvic Limb - Winter 2010

Front 1

What does the femoral n. innervate?

Back 1

Iliopsoas, quadriceps femoris mm.

Front 2

What does the saphenous n. innervate?

Back 2

sartorius m. (usually)

Front 3

Which nerves provide cutaneous innervation to the following areas? (medial view in case you couldn't tell)

Back 3

A - Genitofemoral n.
B - Caudal cutaneous femoral n.
C - Saphenous n.
D - Caudal cutaneous sural n.
E - Cutaneous brs. of superficial peroneal n.

Front 4

How would dysfunction of the femoral nerve present?

Back 4

Inability to extend stifle or support weight, reduced ability to rotate thigh inward, and loss of sensation over the medial stifle region.

Front 5

From which spinal nerves does the obturator nerve arise?

Back 5

L4 - L6

Front 6

Which muscles does the obturator nerve innervate?

Back 6

External obturator and adductors of the pelvis (adductor, pectineus, and gracilis) mm.

Front 7

T or F:
Dysfunction of the obturator nerve would result in loss of sensation to the inguinal region and inability to adduct the hip and thigh.

Back 7

False, *******!
Obturator has no cutaneous innervation! Try and get it right next time...

Front 8

OK here is an easy one - through which foramen does the obturator n. pass?

Back 8

Obturator foramen

Front 9

From which spinal nerves does the caudal cutaneous femoral nerve arise?

Back 9

Ventral brs. of S1 and S2 (+/- S3)

Front 10

Which spinal nerves give rise to the lumbosacral trunk? Which nerves does this trunk give rise to?

Back 10

Ventral brs. of L6, L7, and S1 (+/- S2).
Gives rise to Cranial gluteal, caudal gluteal, and sciatic nn.

Front 11

Which muscles does the cranial gluteal nerve innervate?

Back 11

Middle gluteal, piriformis, deep gluteal, and tensor fascia latae mm.

Front 12

Which region depicts the cutaneous area of the cranial gluteal nerve? How 'bout the caudal cutaneous femoral n.?

Back 12

*******! The cranial gluteal nerve has NO cutaneous area! Hopefully you got that D is the region for the caudal cutaneous femoral n.!!

Front 13

ID these nerves of the rump (lateral view).

Back 13

A - Sciatic n.
B - Caudal gluteal n.
C - Lumbosacral trunk
D - Cranial gluteal n.

Front 14

Which muscles does the caudal gluteal nerve innervate?

Back 14

Superficial gluteal m.

Front 15

Which muscles does the sciatic nerve innervate within the pelvis?

Back 15

Internal obturator
Gemelli
Quadratus femoris mm.

Front 16

Which muscles does the sciatic nerve innervate caudal to the hip?

Back 16

Biceps femoris
Semimembranosus
Semitendinosus mm.

Front 17

Which nerves course over the greater ischiatic notch?

Back 17

Nerves of the lumbosacral trunk
(Sciatic, caudal and cranial gluteal nn.)

Front 18

ID these nerves

Back 18

A - Sciatic n.
B - Tibial n.
C - Peroneal n.

Front 19

What spinal nerves give rise to the sciatic n.? The common peroneal n.? The tibial n.?

Back 19

Sciatic - L6, L7 & S1 (+/- S2)
Peroneal - L6/7
Tibial - L7 & S1

Front 20

What does the tibial nerve provide motor innervation to?

Back 20

extensors of the hock and flexors of the digits

Front 21

Which muscles does the tibial nerve innervate?

Back 21

Gastrocnemius m.
Superficial digital flexor m.
Popliteus m.
Deep Digital flexor m.
Caudal tibial m.

Front 22

Which nerves generate the following autonomous zones?

Back 22

A - Genitofemoral n.
B - Saphenous
C - Peroneal
D - Tibial
E - Sciatic
F - Caudal cutaneous femoral
G - Lateral cutaneous femoral