SA Pelvic Limb Flashcards
Largest paired branch off the aorta
External Iliac a.
Only branch off of the external illiac a.
Deep Femoral
What does the external iliac a. continue outside the abdominal wall as?
Femoral a.
What branches off of the Deep Femoral a.?
Pudendoepigastric trunk
What does the Deep femoral a. continue as?
medial circumflex femoral a.
What are the two branches of the pudendoepigastric trunk?
- external pudendal a.
2. caudal epigastric a.
This a. is a continuation of the deep femoral a. after giving off the pudendoepigastric trunk
Medial circumflex femoral a.
Where is the vascular lacuna located?
b/t the inguinal ligament and pelvis
what are the boarders of the femoral triangle?
cr: caudal part of sartorius m.
cd: pectinius m.
prox: inguinal lig.
The Femoral a. is a continuation of which a.?
External iliac a.
What are the 7 branches of the Femoral a.?
- superficial circumflex iliac a.
- Lateral circumflex femoral
- Proximal caudal femoral a.
- saphenous a.
- Descending genicular a.
- middle caudal femoral a.
- distal caudal femoral a.
What are the 2 branches of the saphenous a.?
Cranial and caudal
What does the femoral a. transition into, and where?
Popliteal a. at the level of the stifle, after the distal caudal femoral comes off
Trace the femoral a. as it changes names:
Femoral a. –> Popliteal a. –> Cranial tibial a. –> Dorsal pedal a.
What is the clinical relevance of the dorsal pedal a.?
Pulse detection and arterial blood draws
what is the clinical relevance of the cranial branch of the lateral saphenous v.?
venipuncture in dogs
What is the clinical relevance of the medial saphenous v.?
veinpuncture in cats
Where do nerves of the lumbosacral plexus go?
to innervate the pelvic limb
What nerves enter the lumbosacral plexus?
L4-S2
T/F. the lumbosacral plexus only contains somatic motor information?
F. somatic motor and sensory
What does the obturator n. innervate?
Adductor muscles of the pelvic limb
ex. obturator m.
pectineus m.
gracilis m.
adductor m.
Where does the obturator n. come from?
lumbosacral plexus
Which nerve is damaged in downer cow syndrome?
Obturator n.
Which nerve branches off the femoral n.?
saphenous n.
What does the femoral n. innervate?
Hip flexors, stifle extensors
iliopsoas m.
quadriceps m.
sartorius m.
What does the saphenous nerve innervate?
sartorius m. and cutaneous innervation:
medial thigh, crus, dorsomedial tarsus, and metatarsus
What does the caudal gluteal n. innervate?
superficial gluteal m.
What does the cranial gluteal n innervate?
middle and deep gluteal, tensor fasciae latae m.
What does the sciatic n. innervate?
extensors of the hip and flexors of the stifle
Biceps femoris m.
semitendinosus m.
semimembrinosus m.
What two nerves branch off the sciatic n.?
- common peroneal n.
2. Tibial n.
What are the two branches of the common peroneal n.
- superficial peroneal n.
2. deep peroneal n.
The superficial peroneal n. supplies cutaneous innervation to where?
craniolateral aspect of the crus and dorsal pes
The superficial peroneal n supplies somatic motor innervation to where?
flexors of the tarsus and extensors of the digits
The deep peroneal nerve supplies cutaneous innervation to where? and somatic motor innervation to?
C: dorsal pes,
SM: flexors of the tarsus and extensors of the digits
Where does the tibial n. enter the crus?
b/t the two heads of the gastrocnemius m.
What does the tibial n. supply?
cutaneous innervation to the plantar aspect of the pes
Somatic innervation to flexors of the stifle and extensors of the digits, and extensors of the tarsus
The dorsal aspect of the pes is innervated by which n.?
deep and superficial branches of common peroneal n.
The plantar aspect of the pes is innervated by which n?
Tibial
Which n. travels through the tarsal tunnel?
Tibial
Which nerves innervate the stifle?
- femoral n.
- saphenous n. - sciatic n.
- tibial n.
- common peroneal n.
What is the diff. b/t a cutaneous zone and autonomous zone
CZ- entire area innervated by a nerve
AZ- area that is only innervated by one nerve
