Peripheral anatomy; lower Flashcards
majority of the sensory inntervation of the torso is mediated through _____
intercostal nerves (anterior rami of the T spine)
anterior and lateral cutaneous branches
Lumbarsacral plexus spinal nerve orgins
L1-S4
Lumbar; L1-L4
sacral; L4-S4
iliohypogastric nerve origin
L1
most superior
ilioinguinal nerve origin
L1
Genitofemoral nerve origin
L1-L2
Lateral cutaneous nerve of the thigh origin
L2-L3
obturator nerve origin
L2-L4
Femoral nerve origin
L2-L4
Nerves that make up the lumbar plexus
femoral nerve
obturator nerve
Lateral cutaneous nerve
Genitofemoral nerve
ilioinguinal nerve
iliohypogastric nerve
Superior lumbar plexus nerves
ilihypogastric
ilioinguinal
genitorfemoral
L1-L2 nerves
Superior lumbar plexus nerves muscle origin
iliohypogastric, ilioinguinal, and genitofemoral run close to or are near the psoas major muscle (helps with posture)
Branches of the iliohypogastric nerve
lateral cutaneous branch
anterior cutaneous branch- Parallel to the inguinal ligament
motor function of the iliohypogastric nerve
transverse abdominal muscle (labored breathing)
internal abdominus muscle
ilioinguinal nerve branches senosry and motor innervation
medial upper thigh/ groin
above the reproductive organs
motor; internal oblique muscle
genitofemoral nerve passes through _____
the psoas muscle
genitofemoral nerve branches
Femoral branch
genital branch
sensory and motor innervation for the genitals
genital branch of the genitofemoral nerve
motor; cremasteric reflex in med
connection points for the inguinal ligament
pubic tubericle and the anterior superior illiac spine
illiac crest indicates____
L4 L5 border
femoral triangle borders
Inguinal Ligament
Adductor Longus
Sartorius
Iliopsoas
Pectineus
Femoral triangle contents
Femoral Nerve> 1cm
Femoral Artery <1cm
Femoral Vein 1 cm
Distance between NAV in fem triangle
1 cm apart from eachother
Fibrous pouch that envelops the femoral NAV
femoral sheath
provides protection
Sensory branch of the femoral nerve
after the motor branching the femoral nerve continues and is called the saphenous nerve and is totally sensory
also the anterior cutaneous branch is a branch of the femoral nerve responsible for sensory
adductor canal borders
Inferior Femoral Triangle
General: Between anterior and medial thigh muscles
adductor canal muscles
Adductor Longus
Sartorius
Vastus Medialis
adductor canal muscles
Adductor Longus
Sartorius
Vastus Medialis
Where is the saphenous nerve located
in the adductor canal on the middle anterior part of the leg
The inferior portion of the lumbar plexus
femoral nerve
obturator nerve
Lateral cutaneous nerve
Lateral cutaneous nerve sensory innervation
anterior lateral thigh
lateral cutaneous nerve motor innervation
no motor connections
obturator nerve pathway
goes to the back of the pelvis and arise through the base of the pelvis at the obturator foramen
nerves that go under the inguinal ligament
lateral cutaneous nerve
femoral nerve
Obturator nerve is primarily_____
motor
only has one small cutaneous branch
Femoral nerve motor branches
muscular branches;
iliopsoas
pectineus
satorius
quadricep femoris
Anterior cutaneous branch of the femoral nerve innervation
medial thigh
Saphenous branch of the femoral nerve innervation
lateral side of the lower leg
nerves of the sacral plexus
superior gluteal nerve
intferior gluteal nerve
posterior cutaneous nerve of the thigh
sciatic nerve
pudendal nerve
superior gluteal nerve spinal nerves
L4-S1
intferior gluteal nerve spinal nerves
L5-S2
the posterior cutaneous nerve of the thigh spinal nerves
S1-S3
sciatic nerve spinal nerves
L4-S3
pudendal nerve spinal nerves
S2-S4
Primary gluteal muscles
gluteus maximus
gluteal medius
gluteal minimus
Superior gluteal nerve innervates what muscles?
gluteus medius
gluteus minimus
tensor fasciae latae
motor
inferior gluteal nerve innervates
Gluteus maximus motor
posterior cutaneous innervation of gluteal region
Superior Clunial Nerve post rami
Middle Clunial Nerve post rami
Inferior Clunial Nerve post rami
Lateral Branch of Iliohypogastric Nerve
Superior clunial nerve spinal nerves
L1-L3 post rami
middle clunial nerve spinal nerves
S1-S3
Inferior clunial nerve comes from_____
branch of the sacral plexus called the posterior femoral cutaneous nerve
what makes up the sciatic nerve and spinal nerves the originate from
common fibular nerve; L4-S2
tibial nerve ; L4-S3
other name for common fibular nerve
peroneal nerve
largest nerve in the body in terms of diabeter
sciatic nerve
Common fibular nerve branches
lateral sural cutaneous nerve; lateral calf
superficial fibular nerve; top of foot
deep fibular nerve; between big toe and 2nd toe
calf muscle name
gastrocnemius
Branches of the superficial fibular nerve of the common fibular nerve of the sciatic nerve of the sacral plexus
medial dorsal cutaneous nerve
intermediate dorsal cutaneous nerve
deep fibular nerve branches
lateral cutaneous nerve of the big toe
medial cutaneous nerve of the 2nd toe
direct cutaneous branches of the Tibial nerve branches (4)
Medial sural cutaneous branch ; back of half
medial calcaneal branch; heel
lateral calcaneal branch; lateral heel
lateral dorsal cutaneous branch; lateral foot
Tibial nerves
tibial nerve
medial plantar nerve
lateral plantar nerve
pudendal nerve innervations
pelvic
rectum/ colon
reproductive organ fucntion (esp men)
what keeps baldder and bowel control
spinal nerves s234 keeps the mess off the floor
Pudendal nerve branches
rectal brach
posterior scrotal branch
dorsal nerve of the penis
the posterior cutaneous nerve of the thigh innervation
hamstring
lower glueal region
