Posterior Abdominal Wall Flashcards
posterior abdominal wall is formed by which bones
Lumbar vertebrae
sacrum
wings of the ileum
ribs
posterior abdominal wall is formed by which muscles
Diaphragm
Iliacus
psoas major
Quadratus lumborum
Pelvic girdle is made up of what
two os coxae
each os coxae articulates with
The other at the pubic synthesis anteriorly,
with the sacrum posteriorly
with the femur inferiorly
Psoas major
o- transverse processes bodies intravertebral disc of T12 to L5
i- lesser trochanter with iliacus
n- financial primary rami of L2 to L4
a- flexion of the thigh, lateral flexion and flexion of the trunk
psoas minor
o- bodies of vertebra T12 and L2 and the disc in between
i- pubic bone
n- ventral primary ramus L1
a- flexion of the pelvis and vertebral column
illiacus
o- iliac fossa
i- lesser trochanter with psoas major
n- femoral nerve
a- flexion of thigh
Quadratus lumborum
o- iliac crest iliolumbar ligament, transverse processes of lower lumbar vertebrae
i- rib 12, transverse process of upper lumbar vertebrae
n- subcostal and upper lumbar ventral primary rami
a- flexion of trunk latterly, extend vertebral column, elevate hip, stabilize 12th rib against inspiration
lumbar plexus
L 1 2 3 and part of L4
sacral plexus
L4 to S4
Illiohypogastric nerve root
L1
Ilioinguinal nerve root
L1
Genitofemoral nerve Root
L1, L2
lateral femoral, cutaneous nerve root
L2, L3
femoral nerve root
L2, L3, L4
Obturator nerve root
L2, L3, L4
Lumbosacral trunk
Part of the ventral primary ramus of L4 joins ventral primary ramus of L5 to form the lumbosacral trunk,
which joins S1 to 4 to form the sacral plexus
superior gluteal nerve roots
L4, L5, S1
inferior gluteal nerve root
L5, S1 S2
Sciatic nerve root
L4, L5, S1 S2 S3
pudendal nerve root
S2 S3 S4
twigs to the piriformis Root
S1 S2 S3 S4
nerve to obturator internus root
L5, S1 S2
nerve to quadratus femoris root
L4 L5 S1
Lumbar plexus nerves
Illiohypogastric
Ilioinguinal
Genitofemoral
Lateral femoral cutaneous
femoral
Obturator
sacral plexus nerves
Superior glueteal
Inferior gluteal
Sciatic
Pudendal
Twigs to the piriformis
Nerve to obturator internus
Nerve to quadratus femoris
The abdominal aorta divides at
Divides at the level of L4 vertebrae into right, and left common iliac arteries
internal iliac supplies
Viscera of the pelvic cavity
External iliac passes
under the inguinal ligament, and enters anterior compartment of the thigh
Changes name to the femoral artery when crossing under the inguinal ligament
Inferior epigastric artery
Arises from the external iliac artery before it enters the anterior thigh compartment
It supplies the inferior aspect of the anterior abdominal wall
inferior vena cava
Largest vein in the body
Returns blood from both lower extremities anterior abdominal wall and abdominal pelvic viscera
The inferior vena cava arises from
about L5 vertebrae from a union of the common iliac veins
Ascends through the vena cava foramen in the diaphragm, and continues to the heart
Diaphragm
Musculotendinous partition separating the thoracic and abdominal cavities
Major muscle of respiration
The diagram is composed of
Central tendon- the shape of a boomerang into which the peripheral muscular portion inserts
Peripheral muscular portion
peripheral muscular portion of diaphragm
Sternal portion
Costal portion
Lumbar portion
Sternal portion of peripheral muscular
Fibers arising from xiphoid and inserting into the Central Tendon
Costal portion of peripheral muscular
Arises from the internal surface of the lower six ribs and costal cartilage and lateral and medial arcuate ligaments
Lumbar portion of peripheral muscular
arises from the lumbar vertebrae into the form of a right Crus and left Crus
right crus arise from LV 1-3 and their intravertebral discs
left crus arise from LV 1-2 and their intervertebral discs
openings in the diaphragm
Sternocostal hiatus
Foramen for the inferior vena cava
Esophageal hiatus
aortic hiatus
Sternocostal hiatus
passage of the superior Epigastric vessels, and some lymphatics
Foramen for the inferior vena cava
Passage for the inferior vena cava, and right phrenic nerve
Esophageal hiatus
Passage for the esophagus and vagal trunks
Aortic hiatus
Passage for the aorta and thoracic ducts
sympathetic trunk passes
Posterior to the medial arcuate ligament