anterior abdominal wall Flashcards
what are the parts of the superficial fascia of the abdominal wall
campers fascia and scarpas fascia
muscles of the abdominal wall
rectus abdominis
external oblique
internal oblique
transverse abdominis
what makes up the rectus sheath and linea alba
the aponeuroses of lateral abdominal wall muscles
what intervates the abdominal wall muscles
ventral rami (subcostal T12, ilioinguinal L1, ilihypogastric L1)
lateral abdominal wall muscle actions
bilaterally flex trunk
unilaterally rotate and laterally flex trunk
rectus abdomins action
flex trnk
superior to the acruate line
anterior and posterior layer of rectus sheath
the acruate line is
the lower limit of the posterior layer of the rectus sheath, representing the shift of the aponeuroses to only being present anterior to the rectus abdominis
round ligament of the liver
connects the liver to the umbilicus
median umbilical fold
single fold of parietal peritoneum at the midline from the bladder to the umbilicus
contains the urachus
medial umbilical fold
paired folds of parietal peritoneum lateral to the median umbilical fold
Contain the obliterated umbilical arterie
lateral umbilical fold
paired folds of parietal peritoneum lateral to medial umbilical folds
Contain the inferior epigastric vessels
what supplies the posterior and abdominal wall with blood
lumbar arteries that arise from the aorta
the aorta bifurcates into
the right and. left common iliac arteries
the common iliac arteries branch into
the internal and external iliac arteries
the internal iliac artery enters the
pelvis
the external iliac artery enters the
lower limb to become the femoral artery
external iliac artery branchs into
deep cirumflex and inferior epigastric artery
internal thoracic artery branches to
superior epigastric artery that anastomeses w inferior epigastric artery in rectus sheath
the inguinal ligament is
thick fibrous band that extends from the anterior superior iliac spine (ASIS) to the pubic tubercle
Formed by the inferior portion of external oblique aponeurosis
the inguinal canal is
a passageway in the inferior part of the anterior abdominal wall
inguinal canal allows
communication between abdominal cavity and groin
the inguinal canal travels
from the deep inguinal ring to the superior inguinal ring
the deep ingiunal ring is
hole in the transveralis fascia
the superficial inguinal ring is
hole in external oblique aponeurosis that allows structures to exit the inguinal canal
main contents of the inguinal canal
round ligament and spermatic cord
the round ligament of the uterus
genital branch of genitofemoral nerve, ilioinguinal nerve, and obliterated processus vaginalis
spermatic cord is
carries nerves, blood vessels, lymphatics, and the ductus/vas deferens from the abdominal cavity to the scrotum
- Begins at deep inguinal ring through inguinal canal exits via superficial inguinal ring
Contains layers of the lateral abdominal wall
the gonads develop in
the posterior abdominal wall of the embryo and descend during embryonic development
gubernaculum
fibrous band that guides the descent of the gonads
spermatic cord
carries nerves, blood vessels, lymphatics, and the ductus/vas deferens from the abdominal cavity to the scrotum
the spermatic cord begins at
Begins at deep inguinal ring through inguinal canal exits via superficial inguinal ring
Contains layers of the lateral abdominal wall
spermatic cord layers
External spermatic fascia (ESF)
Derived from external oblique
Cremasteric fascia and muscle (C)
Derived from internal oblique
Internal spermatic fascia (ISF)
Derived from transversalis fascia
spermatic cord contents
ductus/vas deferens
testicular arteries
pampiniform venous plexus
gential branches of gentofemoral nerce
vas deferns
Muscular tubes that carry sperm from the epididymis to the ejaculatory duct
testicular arteries
Branch of aorta
At vertebral level L2
Supply blood to the testes and epididymis
pampiniform venous plexus
Drain blood from testis and epididymis
Network of veins in the spermatic cord and scrotum
Converge superiorly to form testicular veins
Thermoregulatory function
gential branches of gentiofemoral nerve
Innervate skin of scrotum and cremaster muscle and fascia
Cremaster reflex: tests spinal levels L1 and L2
Test newborns for cryptorchidism
scrotum
an outgrowth of anterior abdominal wall
scrotum contains
the testes, epididymis, and the contents of the spermatic cord
deep to the skin of the scrotum is
dartos fsacia and muscle which is dervied from scarpas fascia
testes
are gonads and produce sperm and testosterone
The testes are located within the scrotum
The testes are surrounded by a dense fibrous sheath, called the tunica albuginea of the testis
The tunica albuginea surrounds the seminiferous tubules of the testes, which is where sperm production occurs
round ligament of the uterus
from the uterus to the labia majora