Lab Secondary Qs Flashcards
The median umbilical fold is a remnant of what embryological structure?
Urachus
The medial umbilical fold is a remnant of what embryological structure?
Umbilical a.
The vessels contained in the falciform ligament are no longer functional in the adult. What anastomoses did these used to be a part of, and in what condition might they re-open in the adult?
Para-umbilical anastomoses
Would re-open with caput medusae if there is a blockage of blood flow in the liver
If a cutaneous n. is found emerging near the umbilicus, which spinal segment is it likely associated with?
T10
A pin is placed through abdominal connective tissue below the arcuate line. What is the first layer the pin is passing through?
Transversalis fascia
The cremaster muscle is derived from what abdominal structure? What nerve innervates it?
Internal oblique m.
Genital branch of genitofemoral n
At what level does the thoracic esophagus pierce the diaphragm to become the abdominal esophagus?
T10
The embryonic vitelline duct is sometimes retained and becomes a mass of pancreatic and gastric tissue called what?
Meckel’s diverticulum
What type of hernia is found in the medial inguinal fossa?
Direct inguinal hernia
What type of hernia is found in the lateral inguinal fossa?
Indirect inguinal hernia
Inferior epigastric a. branches from …
External iliac a.
Superior epigastric a. branches from …
Internal thoracic a.
Parasympathetic innervation to the colon past the splenic flexure
Pelvic splanchnic nn
Parasympathetic innervation to the colon prior to the splenic flexure
Vagus n
What branch of the IMA anastomoses with a branch of the SMA?
Left colic a. (IMA) anastomoses with Right colic a. (SMA)
What congenital anomaly may occur at the pyloric sphincter causing projectile vomiting?
Hypertrophic pyloric stenosis
Ligamentum teres hepatis is derived from what embryo structure
L umbilical v
Ligamentum venosum is derived form what embryo structure
Ductus venosus
Greater splanchnic nn T5-T9 are associated with what ganglion
Celiac ganglion
What passes through the caval opening at T8?
IVC
R phrenic n
What level is the aortic hiatus; what passes through i?
T12
Aorta, thoracic duct, azygous v
Level of aortic bifurcation
L4 —> into R/L common iliacs
Central tendon of diaphragm is derived from what embryo structure?
Septum transversum (splanchnic mesoderm)
What structures make up the conjoint tendon?
Transversus abdominis + internal oblique aponeuroses
