abdominal wall Flashcards
how is the linea alba formed
by the union of the aponeuroses of the right and left oblique and transverse abdominal muscles
transverse abdominal oblique arises from
the coastal arch ( last two ribs that don’t attach directly to the sternum)
what is the rectus sheath
fused aponeuroses of the ext. and internal abdominal oblique muscles
the aponeuroses of the transverse abdominal is called the
internal lamina
the linea alba extends from the __ to the ___
xiphoid process to the pubis (along with prepubic tendon)
what is the tendon of insertion of the rectus abdominis
prepubic tendon
how does the linea alba receive its blood supply
receives blood supply through diffusion
is avascular, has no blood vessels, nerves or muscles here
a reason why surgeons like to cut here
what attaches to the dorsal surface of the linea alba
falciform ligament and median ligament of the bladder
describe abdominalcentesis or paracentesis
caudolaterally to the umbilicus to avoid falciform ligament and a full urinary bladder
clinical sig of linea alba
umbilical hernias ( common in dogs ) 4 sites : ventral, paracostal, umbilical, cranial pubic ligament
superficial inguinal ring?
slit in aponeuroses of external abdominal oblique muscle
what structures pass through the vaginal ring
spermatic cord
ductus deferens artery and vein, and testicular artery and vein
the internal abdominal oblique fibers run
cranioventrally
the inguinal canal contains
external pudendal vessels, genitofemoral nerve, cremaster muscle( males), peritoneum
the vaginal tunic or vaginal ring( in males ) contain
testis and spermatic cord
the vaginal process ( in females) contain
round ligament of the uterus
what is the vascular lacuna
base of the femoral triangle
clinical significance of inguinal hernia
happens more in females because the round ligament of the uterus goes through vaginal process, dilates the canal
what is cryptorchidism
failure of testis to descend (hidden testis)
can be bilateral or unilateral.. bilateral means they still can produce sperm, unilateral means spermatogenesis can occur
why does cryptorchidism occur , and what is treatment
high temperature, spermatogenesis is not initiated at puberty, exclude from breeding
what is the testicle function
primary site of sperm production
