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There are ____ pairs of thoracic nerve roots
12
Medial branches of the thoracic posterior primary rami supply which muscles?
-semispinalis (T1-T6)
-longissimus (T7-T12)
-multifidi
Lateral branches of the thoracic posterior primary rami supply which muscles?
-longissimus
-iliocostalis
-levator costarum
(TQ) The _____ nerve is the largest of the thoracic nerves
subcostal
Medial branches of the lumbar posterior primary rami supply the ____
multifidi
Lateral branches of the lumbar posterior primary rami supply the _____
erector spinae group
Posterior primary rami of lumbar spinal nerves are purely _____
motor
There will be a white rami communicans associated with preganglionic sympathetic fibers from _____
T1-L2
The lumbar plexus is formed by anterior primary rami of _____ and part of L4
L1-L3
L1-L4 supplies _____
quadratus lumborum
L1-L2 supplies ____
psoas minor
L2-L4 supplies ____
psoas major
What are the 6 nerves of the lumbar plexus?
1. iliohypogastric
2. ilioinguinal
3. genitofemoral
4. lateral cutaneous nerve of the thigh
5. femoral nerve
6. obturator nerve
Iliohypogastric nerve contains fibers from ___ and ___
T12 ; L1
Lateral cutaneous branch of the iliohypogastric nerve supplies the _____ region
posterolateral gluteal
After giving off the lateral cutaneous branch, the iliohypogastric nerve gives off the anterior cutaneous branch which supplies skin on the ______
pubic region
What 2 muscles do the iliohypogastric and ilioinguinal nerve supply?
1. internal abdominal oblique
2. transverse abdominal
Ilioinguinal nerve contains fibers from ___ and ___
T12 ; L1
The ilioinguinal nerve enters and is transmitted through the ______
inguinal canal
True or False? The ilioinguinal nerve supplies the same muscles as the iliohypogastric nerve
true
Genitofemoral nerve contains fibers from ___ and ___
L1 ; L2
Genital branch of the genitofemoral nerve provides motor supply to the _____ muscle
cremaster
Femoral branch of the genitofemoral nerve supplies the skin on the _______ thigh
upper anterior
Lateral cutaneous nerve of the thigh contains fibers from ___ and ___
L2 ; L3
The lateral cutaneous nerve of the thigh is purely _____
sensory
Lateral cutaneous nerve of the thigh supplies the skin of the ____ superior to the knee
lateral thigh
Femoral nerve contains fibers from ____, ____ and ____
L2 ; L3 ; L4
______ is the largest branch of the lumbar plexus
femoral nerve
(TQ) The femoral nerve gives off branches only in the _____ and femoral triangle
abdomen
(TQ) Within the abdomen, the femoral nerve gives off muscular branches to the ____ and ____, and also sends some fibers to the femoral artery
iliacus ; pectineus
Anterior division of the femoral nerve gives rise to what 3 nerves?
1. intermediate cutaneous nerve of the thigh
2. medial cutaneous nerve of the thigh
3. nerve to the sartorius
Intermediate cutaneous nerve of the thigh supplies:
skin on anterior thigh
The lateral branch of the intermediate cutaneous nerve of the thigh communicates with the ____ branch of the genitofemoral nerve
femoral
Medial cutaneous nerve of the thigh sends branches to supply the skin of the medial ____, medial ____ and across to the lateral side of the patella
thigh ; knee
Some branches of the medial cutaneous nerve of the thigh will supply skin on the medial leg through communications with the _____ nerve
saphenous
The ___ nerve and ____ both supply the medial thigh
obturator ; medial cutaneous nerve of the thigh
True or False? Intermediate and medial cutaneous nerves of the thigh are sensory and nerve to sartorius is motor
true
The saphenous nerve is transmitted through the _______
adductor (hunter's) canal
Obturator nerve contains fibers from ___, ___ and ___
L2 ; L3 ; L4
The main movement associated with the obturator nerve is _____
adduction
____ nerve is the principle contributor to the obturator nerve
L3
(TQ) The posterior/anterior branch of the obturator nerve are separated initially by the _____ and then by the _____
obturator externus ; adductor brevis
Anterior branch of the obturator nerve sends branches to communicate with branches of the femoral nerve, forming the _____
subsartorial plexus
The posterior branch of the obturator nerve travels through the _____
obturator externus
The posterior branch of the obturator nerve sends muscular branches to which 2 muscles?
1. obturator externus
2. adductor magnus